NBER working paper series ;

"The interwar period was marked by the end of the classical gold standard regime and new levels of macroeconomic disorder in the world economy. The interwar disorder often is linked to policies inconsistent with the constraint of the open-economy trilemma the inability of policymakers simultaneously to pursue a fixed exchange rate, open capital markets, and autonomous monetary policy. The first two objectives were linchpins of the pre-1914 order. As increasingly democratic polities faced pressures to engage in domestic macroeconomic management, however, either currency pegs or freedom of capital movements had to yield. This historical analytic narrative is compelling with significant ramifications for today's world, if true but empirically controversial. We apply theory and empirics to the interwar data and find strong support for the logic of the trilemma. Thus, an inability to pursue consistent policies in a rapidly changing political and economic environment appears central to an understanding of the interwar crises, and the same constraints still apply today"--National Bureau of Economic Research web site.

JEREMY. :) ALEX. :( HEATHCLIFF?Now that we're living in Hollywood, Eva thinks anything is possible - including casting the part of my boyfriend! As for the players: one's an actor (bad sign), one's a snobby rich kid (worse sign), and one doesn't even exist (stop sign). Guess who my sister picked?From the Trade Paperback edition.

"This paper introduces a framework for analyzing the role of financial factors as a source of instability in small open economies. Our basic model is a dynamic open economy model with a tradeable good produced with capital and a country-specific factor. We also assume that firms face credit constraints, with the constraint being tighter at a lower level of financial development. A basic implication of this model is that economies at an intermediate level of financial development are more unstable than either very developed or very underdeveloped economies. This is true both in the sense that temporary shocks have large and persistent effects and also in the sense that these economies can exhibit cycles. Thus, countries that are going through a phase of financial development may become more unstable in the short run. Similarly, full capital account liberalization may destabilize the economy in economies at an intermediate level of financial development: phases of growth with capital inflows are followed by collapse with capital outflows. On the other hand, foreign direct investment does not destabilize"--National Bureau of Economic Research web site.

"This paper explores the following hypotheses on the appropriate education for innovating entrepreneurship: a) breakthrough inventions are contributed disproportionately by independent inventors and entrepreneurs, while large firms focus on cumulative, incremental (and often invaluable) improvements; b) education for mastery of scientific knowledge and methods is enormously valuable for innovation and growth, but can impede heterodox thinking and imagination; c) large-firm R&D requires personnel who are highly educated in extant information and analytic methods, while successful independent entrepreneurs and inventors often lack such preparation; d) while procedures for teaching current knowledge and methods in science and engineering are effective, we know little about training for the critical task of breakthrough innovation"--National Bureau of Economic Research web site.

"The cash flows of growth stocks are particularly sensitive to temporary movements in aggregate stock prices (driven by movements in the equity risk premium), while the cash flows of value stocks are particularly sensitive to permanent movements in aggregate stock prices (driven by market-wide shocks to cash flows.) Thus the high betas of growth stocks with the market's discount-rate shocks, and of value stocks with the market's cash-flow shocks, are determined by the cash-flow fundamentals of growth and value companies. Growth stocks are not merely "glamour stocks" whose systematic risks are purely driven by investor sentiment. More generally, accounting measures of firm-level risk have predictive power for firms' betas with market-wide cash flows, and this predictive power arises from the behavior of firms' cash flows. The systematic risks of stocks with similar accounting characteristics are primarily driven by the systematic risks of their fundamentals"--National Bureau of Economic Research web site.

"This paper presents new data on the sources of growth for the Japanese economy over the period 1960- 2000. The principal innovation is the incorporation of detailed information for individual industries, including those involved in the production of computers, communications equipment, and electronic components as information technology equipment. We show that economic growth is dominated by investments and productivity growth in information technology, both for individual industries and the economy as a whole. We also show that the revival of total factor productivity growth accounts for the modest resurgence of the Japanese economy since 1995"--National Bureau of Economic Research web site.

"This paper asks the question: can central bank transparency go too far? Transparency is beneficial only when it serves to simplify communication with the public and helps generate support for central banks to conduct monetary policy optimally with an appropriate focus on long-run objectives. This paper argues that some suggestions for increased transparency, particularly a central bank announcement of its objective function or projections of the path of the policy interest rate, will complicate the communication process and weaken support for a central bank focus on long-run objectives. Transparency can indeed go too far. However, central banks can improve transparency in discussing that they do care about reducing output fluctuations . By describing procedures for how the path and horizon of inflation targets would be modified in the face of large shocks, by emphasizing that monetary policy will be just as vigilant in preventing inflation from falling too low as it is from preventing it from being too high, and by indicating that the central bank will pursue expansionary policies when output falls very far below potential, central banks can show that they do care about output fluctuations. These steps to improve transparency will increase support for the central bank's policies and independence, but avoid a focus on the short run that could interfere with the ability of the central bank to do its job effectively"--National Bureau of Economic Research web site.

"Cities are physical structures, but the modern literature on urban economic development rarely acknowledges that fact. The elasticity of housing supply helps determine the extent to which increases in productivity will create bigger cities or just higher paid workers and more expensive homes. In this paper, we present a simple model that provides a framework for doing empirical work that integrates the heterogeneity of housing supply into urban development. Empirical analysis yields results consistent with the implications of the model that differences in the nature of house supply across space are not only responsible for higher housing prices, but also affect how cities respond to increases in productivity"--National Bureau of Economic Research web site.

"This paper concentrates on both the positive and normative effects of punishments that enforce laws to make production and consumption of particular goods illegal, with illegal drugs as the main example. Optimal public expenditures on apprehension and conviction of illegal suppliers obviously depend on the extent of the difference between the social and private value of consumption of illegal goods, but they also depend crucially on the elasticity of demand for these goods. In particular, when demand is inelastic, it does not pay to enforce any prohibition unless the social value is negative and not merely less than the private value. We also compare outputs and prices when a good is legal and taxed with outputs and prices when the good is illegal. We show that a monetary tax on a legal good could cause a greater reduction in output and increase in price than would optimal enforcement, even recognizing that producers may want to go underground to try to avoid a monetary tax. This means that fighting a war on drugs by legalizing drug use and taxing consumption may be more effective than continuing to prohibit the legal use of drugs"--National Bureau of Economic Research web site.

"This paper begins by examining the persistence of movements in the U.S. Government's budget posture. Deficits display considerable persistence, and debt levels (relative to GDP) even more so. Further, the degree of persistence depends on what gives rise to budget deficits in the first place. Deficits resulting from shocks to defense spending exhibit the greatest persistence and those from shocks to nondefense spending the least; deficits resulting from shocks to revenues fall in the middle. The paper next reviews recent evidence on the impact of changes in government debt levels (again, relative to GDP) on interest rates. The recent literature, focusing on expected future debt levels and expected real interest rates, indicates impacts that are large in the context of actual movements in debt levels: for example, an increase of 94 basis points due to the rise in the debt-to-GDP ratio during 1981-93, and a decline of 65 basis point due to the decline in the debt-to-GDP ratio during 1993-2001. The paper next asks why deficits would exhibit the observed negative correlation with key elements of investment. One answer, following the analysis presented earlier, is that deficits are persistent and therefore lead to changes in expected future debt levels, which in turn affect real interest rates. A different reason, however, revolves around the need for markets to absorb the increased issuance of Government securities in a setting of costly portfolio adjustment. The paper concludes with some reflections on "the Perverse Corollary of Stein's Law" that is, the view that in the presence of large government deficits nothing need be done because something will be done"--National Bureau of Economic Research web site.

"If promotion in a hierarchy is based on a random signal of ability, rates of promotion will be affected by risk-taking. Further, the numbers and abilities of risk-takers and non-risk-takers will be different at each stage of the hierarchy, and the ratio will be changing. I show that, under mild conditions, more risk-takers than non-risk-takers will survive at early stages, but they will have lower ability. At later stages, this will be reversed: Fewer risk-takers than non-risk-takers survive, but they will have higher ability. I give several interpretations for how these theorems relate to affirmative action, in light of considerable evidence that males are more risk-taking than females"--National Bureau of Economic Research web site.

During the early 1980s, earnings inequality in the U.S. labor market rose relatively uniformly throughout the wage distribution. But this uniformity gave way to a significant divergence starting in 1987, with upper-tail (90/50) inequality rising steadily and lower tail (50/10) inequality either flattening or compressing for the next 16 years (1987 to 2003). This paper applies and extends a quantile decomposition technique proposed by Machado and Mata (2005) to evaluate the role of changing labor force composition (in terms of education and experience) and changing labor market prices to the expansion and subsequent divergence of upper- and lower-tail inequality over the last three decades We show that the extended Machado-Mata quantile decomposition corrects shortcomings of the original Juhn-Murphy-Pierce (1993) full distribution accounting method and nests the kernel reweighting approach proposed by DiNardo, Fortin and Lemieux (1996). Our analysis reveals that shifts in labor force composition have positively impacted earnings inequality during the 1990s. But these compositional shifts have primarily operated on the lower half of the earnings distribution by muting a contemporaneous, countervailing lower-tail price compression. (cont.) The steady rise of upper tail inequality since the late 1970s appears almost entirely explained by ongoing between-group price changes (particularly increasing wage differentials by education) and residual price changes. Keywords: Wage structure, residual inequality, technological change, labor market institutions, quantile regression. JEL Classifications: J3, D3, O3, C1.

"This article develops the point that the problems associated with contractual holdup may justify legal intervention in theory, and the article relates this conclusion to legal intervention in practice. Contractual holdup is considered for both fresh contracts and for modifications of contracts. The law can in principle alleviate the incentive and risk-bearing problems due to holdup in two ways. One approach is for the law simply to void agreements made in certain circumstances, since that will remove the prospect of profit from holdup. This policy may be desirable when the events that permit holdup are engineered, for these events would not have been instigated if they would not have resulted in enforceable contracts. When situations of need are not engineered (bad weather puts a ship in jeopardy), flat voiding of contracts is undesirable, since contracts for aid in situations of need (to tow a ship) are often socially beneficial. In these circumstances, the policy of controlling the contract price is preferable, as that policy can reduce the problems of holdup but still allow contracts to be made. Both types of legal intervention in contracts and their modifications -- voiding without regard to price and control of price -- are used by courts to counter problems of pronounced holdup. Also, various price control regulations appear to serve the same objective, at least in part, for instance maximum price ordinances for car towing services, emergency price regulations, and the historically important rule of laesio enormis of the Middle Ages"--National Bureau of Economic Research web site.

"Among the developing countries of the world, those emerging markets that have sought some degree of integration into world finance are characterized by higher per capita incomes, higher long-run growth rates, and lower output and consumption volatility. These characteristics are more likely to be causes than effects of financial integration. The measurable gains from financial integration appear to be lower for emerging markets than for higher-income countries, and appear to have been limited by recent crises. One factor limiting the gains from financial integration is the difficulty emerging economies face in resolving the open-economy trilemma. Given their structural and institutional features, many emerging economies cannot live comfortably either with fixed or with freely floating exchange rates. Most recently, the exchange rates of several emerging countries display attempts at stabilization punctuated by high volatility in periods of market stress"--National Bureau of Economic Research web site.

"Party platforms differ sharply from one another, especially on issues with religious content, such as abortion or gay marriage. Religious extremism in the U.S. appears to be strategically targeted to win elections, since party platforms diverge significantly, while policy outcomes like abortion rates are not affected by changes in the governing party. Given the high returns from attracting the median voter, why do vote-maximizing politicians veer off into extremism? In this paper, we find that strategic extremism depends on an important intensive margin where politicians want to induce their core constituents to vote (or make donations) and the ability to target political messages towards those core constituents. Our model predicts that the political relevance of religious issues is highest when around one-half of the voting population attends church regularly. Using data from across the world and within the U.S., we indeed find a non-monotonic relationship between religious extremism and religious attendance"--National Bureau of Economic Research web site.

"Recent research in empirical finance has documented that expected excess returns on bonds and stocks, real interest rates, and risk shift over time in predictable ways. Furthermore, these shifts tend to persist over long periods of time. In this paper we propose an empirical model that is able to capture these complex dynamics, yet is simple to apply in practice, and we explore its implications for asset allocation. Changes in investment opportunities can alter the risk-return tradeoff of bonds, stocks, and cash across investment horizons, thus creating a 'term structure of the risk-return tradeoff.' We show how to extract this term structure from our parsimonious model of return dynamics, and illustrate our approach using data from the U.S. stock and bond markets. We find that asset return predictability has important effects on the variance and correlation structure of returns on stocks, bonds and T-bills across investment horizons"--National Bureau of Economic Research web site.

"The stylized fact that individuals who come from families with more children are disadvantaged in the schooling process has been one of the most robust effects in human capital and stratification research over the last few decades. For example, Featherman and Hauser (1978: 242-243) estimate that each additional brother or sister costs respondents on the order of a fifth of a year of schooling. However, more recent analyses suggest that the detrimental effects of sibship size on children's educational achievement might be spurious. We extend these recent analyses of spuriousness versus causality using a different method and a different set of outcome measures. We suggest an instrumental variable approach to estimate the effect of sibship size on children's private school attendance and on their likelihood of being held back in school. Specifically, we deploy the sex-mix instrument used by Angrist and Evans (1998). Analyses of educational data from the 1990 PUMS five percent sample reveal that children from larger families are less likely to attend private school and are more likely to be held back in school. Our estimates are smaller than traditional OLS estimates, but are nevertheless greater than zero. Most interesting is the fact that the effect of sibship size is uniformly strongest for latter-born children and zero for first born children"--National Bureau of Economic Research web site.

"Since 1950, housing prices have risen regularly by almost two percent per year. Between 1950 and 1970, this increase reflects rising housing quality and construction costs. Since 1970, this increase reflects the increasing difficulty of obtaining regulatory approval for building new homes. In this paper, we present a simple model of regulatory approval that suggests a number of explanations for this change including changing judicial tastes, decreasing ability to bribe regulators, rising incomes and greater tastes for amenities, and improvements in the ability of homeowners to organize and influence local decisions. Our preliminary evidence suggests that there was a significant increase in the ability of local residents to block new projects and a change of cities from urban growth machines to homeowners' cooperatives"--National Bureau of Economic Research web site.

"The paper aims at explaining why the Bank of Japan has not adopted inflation targeting, despite calls for such a policy. Disclosed minutes of the Monetary Policy Meetings of the Bank of Japan, after March 1998, as well as Speeches by its members give clues to changing reasons against inflation targeting. Inflation targeting was not adopted in Japan in the early years (the first wave of interest in1999-2000) because the Board members were not sure about an appropriate price index, and a specific number for an appropriate inflation rate. A Bank of Japan study, completed in October 2000, did not give any clear answers. Inflation targeting was not adopted in later years (2001-2003), despite the inflation-targeting-like commitment strategy adopted in March 2001, because the Board members thought that conventional tools to increase the inflation rate were not available. As such, they thought that announcing a target with a positive inflation rate would damage confidence. In terms of introducing unconventional measures, the Bank of Japan worried about the transmission channels and the damage to its balance sheet. Towards the end of Governor Hayami fs term, the views against inflation targeting turned sharply negative, as news reports suggested that it may be linked to the new Governor fs appointment. Therefore, , why inflation targeting was not adopted, can be explained and understood from a political economy perspective"--National Bureau of Economic Research web site.

"This paper argues that a linear statistical model with homoskedastic errors cannot capture the nineteenth-century notion of a recurring cyclical pattern in key economic aggregates. A simple nonlinear alternative is proposed and used to illustrate that the dynamic behavior of unemployment seems to change over the business cycle, with the unemployment rate rising more quickly than it falls. Furthermore, many but not all economic downturns are also accompanied by a dramatic change in the dynamic behavior of short-term interest rates. It is suggested that these nonlinearities are most naturally interpreted as resulting from short-run failures in the employment and credit markets, and that understanding these short-run failures is the key to understanding the nature of the business cycle"--National Bureau of Economic Research web site.

"We present a model of the creation of social networks, such as political parties, trade unions, religious coalitions, or political action committees, through discussion and mutual persuasion among their members. The key idea is that people are influenced by those inside their network, but not by those outside. Once created, networks can be rented out' to politicians who seek votes and support for their initiatives and ideas, which may have little to do with network members' core beliefs. In this framework, political competition does not lead to convergence of party platforms to the views of the median voter. Rather, parties separate their messages and try to isolate their members to prevent personal influence from those in the opposition"--National Bureau of Economic Research web site.

"We present a tractable framework for the analysis of the relationship between contract incompleteness, technological complementarities and the division of labor. In the model economy, a firm decides the division of labor and contracts with its worker-suppliers on a subset of activities they have to perform. Worker-suppliers choose their investment levels in the remaining activities anticipating the ex post bargaining equilibrium. We show that greater contract incompleteness reduces both the division of labor and the equilibrium level of productivity given the division of labor. The impact of contract incompleteness is greater when the tasks performed by different workers are more complementary. We also discuss the effect of imperfect credit markets on the division of labor and productivity, and study the choice between the employment relationship versus an organizational form relying on outside contracting. Finally, we derive the implications of our framework for productivity differences and comparative advantage across countries"--National Bureau of Economic Research web site.

"The conventional wisdom views high levels of education as a prerequisite for democracy. This paper shows that existing evidence for this view is based on cross-sectional correlations, which disappear once we look at within-country variation. In other words, there is no evidence that countries that increase their education are more likely to become democratic"--National Bureau of Economic Research web site.

"The appeals process -- whereby litigants can have decisions of adjudicators reviewed by a higher authority -- is a general feature of formal legal systems (and of many private decisionmaking procedures). It leads to the making of better decisions, because it constitutes a threat to adjudicators whose decisions would deviate too much from socially desirable ones. Further, it yields this benefit without absorbing resources to the extent that adjudicators can anticipate when appeals would occur and would thus make decisions to forestall the actual occurrence of appeals"--National Bureau of Economic Research web site.

"This paper studies the medium run consequences of an increase in the rate of accumulation of human capital in a developing country. From 1974 to 1978, the Indonesian government built over 61,000 primary schools. The school construction program led to an increase in education among individuals who were young enough to attend primary school after 1974, but not among the older cohorts. 2SLS estimates suggest that an increase of 10 percentage points in the proportion of primary school graduates in the labor force reduced the wages of the older cohorts by 3.8% to 10% and increased their formal labor force participation by 4% to 7%. I propose a two-sector model as a framework to interpret these findings. The results suggest that physical capital did not adjust to the faster increase in human capital"--National Bureau of Economic Research web site.

"At the close of World War II, there were wide-ranging debates about the future of economic developments. Historical experience has since shown that these forecasts were uniformly too pessimistic. Expectations for the American economy focused on the likelihood of secular stagnation; this topic continued to be debated throughout the post-World War II expansion. Concerns raised during the late 1960s and early 1970s about rapid population growth smothering the potential for economic growth in less developed countries were contradicted when during the mid- and late-1970s, fertility rates in third world countries began to decline very rapidly. Predictions that food production would not be able to keep up with population growth have also been proven wrong, as between 1961 and 2000 calories per capita worldwide have increased by 24 percent, despite the doubling of the global population. The extraordinary economic growth in Southeast and East Asia had also been unforeseen by economists"--National Bureau of Economic Research web site.

"We study the determinants of vertical integration in a new dataset of over 750,000 firms from 93 countries. Existing evidence suggests the presence of large cross-country differences in the organization of firms, which may be related to differences in financial development, contracting costs or regulation. We find cross-country correlations between vertical integration on the one hand and financial development, contracting costs, and entry barriers on the other that are consistent with these "priors". Nevertheless, we also show that these correlations are almost entirely driven by industrial composition; countries with more limited financial development, higher contracting costs or greater entry barriers are concentrated in industries with a high propensity for vertical integration. Once we control for differences in industrial composition, none of these factors are correlated with average vertical integration. However, we also find a relatively robust differential effect of financial development across industries; countries with less-developed financial markets are significantly more integrated in industries that are more human capital or technology intensive"--National Bureau of Economic Research web site.

"This paper introduces a tractable, structural model of subjective beliefs. Forward-looking agents care about expected future utility flows, and hence have higher current felicity if they believe that better outcomes are more likely. On the other hand, biased expectations lead to poorer decisions and worse realized outcomes on average. Optimal expectations balance these forces by maximizing average felicity. A small bias in beliefs typically leads to first-order gains due to increased anticipatory utility and only to second-order costs due to distorted behavior. We show that in a portfolio choice problem, agents overestimate the return on their investment and exhibit a preference for skewness. In general equilibrium, agents' prior beliefs are endogenously heterogeneous. Finally, in a consumption-saving problem with stochastic income, agents are both overconfident and overoptimistic"--National Bureau of Economic Research web site.

"This paper reviews Japanese monetary policy over the last two decades with an emphasis on the experience of deflation from the mid-1990s. The paper is quite critical of the conduct of monetary policy, particularly from 1998 to 2003. The Bank of Japan's rhetoric was not helpful in fighting deflation, and the interest rate hike in August 2000 amid deflation was a serious mistake. Deflation can be quite costly, and a key element in both preventing and escaping deflation is the management of expectations, using either price level or inflation targeting, because the zero lower bound on interest rates means that the overnight interest rate can no longer be used as the instrument of monetary policy. This paper proposes how to best manage expectations to exit deflation. Price-level targeting overcomes theoretical problems, such as need for a history dependent strategy, associated with inflation targeting. However, because actions speak louder than words, management of expectations also involves non-conventional monetary policies, a combination of which might have to be tried to help the Japanese economy escape its deflationary trap"--National Bureau of Economic Research web site.

"We examine entry across 113 national markets in 16 different industries using a comprehensive data set of French manufacturing firms. The data are unique in indicating how much each firm exports to each destination. Looking across all manufacturers: (1) Firms differ substantially in export participation, with most selling only at home; (2) The number of firms selling to multiple markets falls off with the number of destinations with an elasticity of --2.5; (3) Decomposing French exports to each destination into the size of the market and French share, variation in market share translates nearly completely into firm entry while about 60 percent of the variation in market size is reflected in firm entry. Looking within each of 16 industries we find little variation in these patterns. We propose that any successful model of trade and market structure must confront these facts"--Federal Reserve Bank of Minneapolis web site.

"This paper develops the empirical and theoretical case that differences in economic institutions are the fundamental cause of differences in economic development. We first document the empirical importance of institutions by focusing on two 'quasi-natural experiments' in history, the division of Korea into two parts with very different economic institutions and the colonization of much of the world by European powers starting in the fifteenth century. We then develop the basic outline of a framework for thinking about why economic institutions differ across countries. Economic institutions determine the incentives of and the constraints on economic actors, and shape economic outcomes. As such, they are social decisions, chosen for their consequences. Because different groups and individuals typically benefit from different economic institutions, there is generally a conflict over these social choices, ultimately resolved in favor of groups with greater political power. The distribution of political power in society is in turn determined by political institutions and the distribution of resources. Political institutions allocate de jure political power, while groups with greater economic might typically possess greater de facto political power. We therefore view the appropriate theoretical framework as a dynamic one with political institutions and the distribution of resources as the state variables. These variables themselves change over time because prevailing economic institutions affect the distribution of resources, and because groups with de facto political power today strive to change political institutions in order to increase their de jure political power in the future. Economic institutions encouraging economic growth emerge when political institutions allocate power to groups with interests in broad-based property rights enforcement, when they create effective constraints on power-holders, and when there are relatively few rents to be captured by power-holders. We illustrate the assumptions, the workings and the implications of this framework using a number of historical examples"--National Bureau of Economic Research web site.

We revisit one of the central empirical findings of the political economy literature that higher income per capita causes democracy. Existing studies establish a strong cross-country correlation between income and democracy, but do not typically control for factors that simultaneously affect both variables. We show that controlling for such factors by including country fixed effects removes the statistical association between income per capita and various measures of democracy. We also present instrumental-variables estimates using two different strategies. These estimates also show no causal effect of income on democracy. Furthermore, we reconcile the positive cross-country correlation between income and democracy with the absence of a causal effect of income on democracy by showing that the long-run evolution of income and democracy is related to historical factors. Consistent with this, the positive correlation between income and democracy disappears, even without fixed effects, when we control for the historical determinants of economic and political development in a sample of former European colonies. Keywords: democracy, economic growth, institutions, political development. JEL Classifications: P16, O10.

"The United States today, according to most studies, is among the least corrupt nations in the world. But America's past was checkered with political scandal and widespread corruption that would not seem unusual compared with the most corrupt developing nation today. We construct a "corruption and fraud index" using word counts from a large number of newspapers for 1815 to 1975, supplemented with other historical facts. The index reveals that America experienced a substantial decrease in corruption from 1870 to 1920, particularly from the late-1870s to the mid-1880s and again in the 1910s. At its peak in the 1870s the "corruption and fraud index" is about five times its level from the end of the Progressive Era to the 1970s. If the United States was once considerably more corrupt than it is today, then America's history should offer lessons about how to reduce corruption. How did America become a less corrupt polity, economy, and society? We review the findings and insights from a series of essays for a conference volume, Corruption and Reform: Lessons from America's History, for which this paper is the introduction that attempt to understand the remarkable evolution of corruption and reform in U.S. history"--National Bureau of Economic Research web site.

"We empirically decompose the S&P 500's dividend yield into (1) a rational forecast of long-run real dividend growth, (2) the subjectively expected risk premium, and (3) residual mispricing attributed to the market's forecast of dividend growth deviating from the rational forecast. Modigliani and Cohn's (1979) hypothesis and the persistent use of the Fed model' by Wall Street suggest that the stock market incorrectly extrapolates past nominal growth rates without taking into account the impact of time-varying inflation. Consistent with the Modigliani-Cohn hypothesis, we find that the level of inflation explains almost 80% of the time-series variation in stock-market mispricing"--National Bureau of Economic Research web site.

"The life-cycle accounts proposal for Social Security reform has been justified by its proponents using a number of different arguments, but these arguments generally involve the assumption of a high likelihood of good returns on the accounts. A simulation is undertaken to estimate the probability distribution of returns in the accounts based on long-term historical experience. U.S. stock market, bond market and money market data 1871-2004 are used for the analysis. Assuming that future returns behave like historical data, it is found that a baseline personal account portfolio after offset will be negative 32% of the time on the retirement date. The median internal rate of return in this case is 3.4 percent, just above the amount necessary for holders of the accounts to break even. However, the U.S. stock market has been unusually successful historically by world standards. It would be better if we adjust the historical data to reduce the assumed average stock market return for the simulation. When this is done so that the return matches the median stock market return of 15 countries 1900-2000 as reported by Dimson et al. , the baseline personal account is found to be negative 71% of the time on the date of retirement and the median internal rate of return is 2.6 percent"--National Bureau of Economic Research web site.

"This paper solves explicitly an equilibrium asset pricing model with liquidity risk--the risk arising from unpredictable changes in liquidity over time. In our liquidity-adjusted capital asset pricing model, a security's required return depends on its expected liquidity as well as on the covariances of its own return and liquidity with market return and market liquidity. In addition, the model shows how a negative shock to a security's liquidity, if it is persistent, results in low contemporaneous returns and high predicted future returns. The model provides a simple, unified framework for understanding the various channels through which liquidity risk may affect asset prices. Our empirical results shed light on the total and relative economic significance of these channels"--National Bureau of Economic Research web site.

"This paper uses the neoclassical growth model to examine the extent to which a tax cut pays for itself through higher economic growth. The model yields simple expressions for the steady-state feedback effect of a tax cut. The feedback is surprisingly large: for standard parameter values, half of a capital tax cut is self-financing. The paper considers various generalizations of the basic model, including elastic labor supply departures from infinite horizons, and non-neoclassical production settings. It also examines how the steady-state results are modified when one considers the transition path to the steady state"--National Bureau of Economic Research web site.

"Under conventional representations of economic policymaking, any innovation is either (1) a change in the objectives that policymakers are seeking to achieve, (2) a change in the choice of policy instrument, or (3) a change in the way auxiliary aspects of economic activity are used to steer policy in the context of time lags.Most public discussion of the 1979 Volcker experiment at the time, and likewise most of the subsequent academic literature, emphasized either the role of quantitative targets for money growth (3) or the use of an open market operating procedure based on a reserves quantity rather than a short-term interest rate (2). With time, however, neither has survived as part of U.S. monetary policymaking.What remains is the question of whether 1979 brought a new, greater weight on the Federal Reserve%u2019s objective of price stability vis-a-vis its objective of output growth and high employment (1). That is certainly one interpretation of the historical record. But the historical evidence is also consistent with the view that the 1970s were exceptional, rather than that the experience since 1979 has differed from what went before as a whole"--National Bureau of Economic Research web site.

"This paper establishes several intra-day patterns of the high-frequency exchange rate behavior, using the firm bid-ask quote, transaction of the EBS data set. First, the activity of quote and transactions is high in the beginning hours of the three major currency markets %u2013 Tokyo, London, and New York and low during the Tokyo and London lunch hours and late afternoon in New York. Second, a new observation is obtained in that activity does not increase toward the end of business hours in the three major markets, even during the closing hours of New York on Friday. Third, an average bid-ask spread is narrow (wide), when quote and deal frequencies are high (low, respectively), except the beginning hour of Tokyo (GMT 0), when the bid-ask spread is wide despite high levels of activity"--National Bureau of Economic Research web site.

"We introduce imperfect creditor protection in a multi-country version of Schumpeterian growth theory with technology transfer. The theory predicts that the growth rate of any country with more than some critical level of financial development will converge to the growth rate of the world technology frontier, and that all other countries will have a strictly lower long-run growth rate. The theory also predicts that in a country that converges to the frontier growth rate, financial development has a positive but eventually vanishing effect on steady-state per-capita GDP relative to the frontier. We present cross-country evidence supporting these two implications. In particular, we find a significant and sizeable effect of an interaction term between initial per-capita GDP (relative to the United States) and a financial intermediation measure in an otherwise standard growth regression, implying that the likelihood of converging to the U.S. growth rate increases with financial development. We also find that, as predicted by the theory, the direct effect of financial intermediation in this regression is not significantly different from zero. These findings are robust to alternative conditioning sets, estimation procedures and measures of financial development"--National Bureau of Economic Research web site.

"Structural vector autoregressions (VARs) are widely used to trace out the effect of monetary policy innovations on the economy. However, the sparse information sets typically used in these empirical models lead to at least two potential problems with the results. First, to the extent that central banks and the private sector have information not reflected in the VAR, the measurement of policy innovations is likely to be contaminated. A second problem is that impulse responses can be observed only for the included variables, which generally constitute only a small subset of the variables that the researcher and policymaker care about. In this paper we investigate one potential solution to this limited information problem, which combines the standard structural VAR analysis with recent developments in factor analysis for large data sets. We find that the information that our factor-augmented VAR (FAVAR) methodology exploits is indeed important to properly identify the monetary transmission mechanism. Overall, our results provide a comprehensive and coherent picture of the effect of monetary policy on the economy"--National Bureau of Economic Research web site.

"The exchange-rate regime is often seen as constrained by the monetary policy trilemma, which imposes a stark tradeoff among exchange stability, monetary independence, and capital market openness. Yet the trilemma has not gone without challenge. Some (e.g., Calvo and Reinhart 2001, 2002) argue that under the modern float there could be limited monetary autonomy. Others (e.g., Bordo and Flandreau 2003), that even under the classical gold standard domestic monetary autonomy was considerable. This paper studies the coherence of international interest rates over more than 130 years. The constraints implied by the trilemma are largely borne out by history"--National Bureau of Economic Research web site.

"This paper investigates whether college students' response to alcohol price and policies differ according to their drinking intensity. Individual level data on drinking behavior, price paid per drink, and college alcohol policies come from the student and administrator components of the 1997 and 1999 waves of the Harvard School of Public Health (HSPH) College Alcohol Study (CAS). Students drinking behavior is classified on the basis of the number of drinks they typically consume on a drinking occasion, and the number of times they have been drunk during the 30 days prior to survey. A generalized ordered logit model is used to determine whether key variables impact differentially the odds of drinking and the odds of heavy drinking. We find that students who faced a higher money price for alcohol are less likely to make the transition from abstainer to moderate drinker and moderate drinker to heavy drinker, and this effect is equal across thresholds. Campus bans on the use of alcohol are a greater deterrent to moving from abstainer to moderate drinker than moderate drinker to heavy drinker"--National Bureau of Economic Research web site.

"We develop a dynamic bargaining model in which a leading country endogenously decides whether to sequentially negotiate free trade agreements with subsets of countries or engage in simultaneous multilateral bargaining with all countries at once. We show how the structure of coalition externalities shapes the choice between sequential and multilateral bargaining, and we identify circumstances in which the grand coalition is the equilibrium outcome, leading to worldwide free trade. A model of international trade is then used to illustrate equilibrium outcomes and how they depend on the structure of trade and protection. Global free trade is not achieved when the political-economy motive for protection is sufficiently large. Furthermore, the model generates both building bloc' and stumbling bloc' effects of preferential trade agreements. In particular, we describe an equilibrium in which global free trade is attained only when preferential trade agreements are permitted to form (a building bloc effect), and an equilibrium in which global free trade is attained only when preferential trade agreements are forbidden (a stumbling bloc effect). The analysis identifies conditions under which each of these outcomes emerges"--National Bureau of Economic Research web site.

"This paper reviews five striking facts about inequality across countries. As Kuznets (1955) famouslyfirst documented, inequality first rises and then falls with income. More unequal societies are muchless likely to have democracies or governments that respect property rights. Unequal societies haveless redistribution, and we have little idea whether this relationship is caused by redistributionreducing inequality or inequality reducing redistribution. Inequality and ethnic heterogeneity arehighly correlated, either because of differences in educational heritages across ethnicities or becauseethnic heterogeneity reduces redistribution. Finally, there is much more inequality and lessredistribution in the U.S. than in most other developed nations"--National Bureau of Economic Research web site.

"This paper analyzes the effects of a large randomized field experiment carried out with H&R Block, offering matching incentives for IRA contributions at the time of tax preparation. About 14,000 H&R Block clients, across 60 offices in predominantly low- and middle-income neighborhoods in St. Louis, were randomly offered a 20 percent match on IRA contributions, a 50 percent match, or no match (the control group). The evaluation generates two main findings. First, higher match rates significantly raise IRA participation and contributions. Take-up rates were 3 percent for the control group, 8 percent in the 20 percent match group, and 14 percent in the 50 percent match group. Average IRA contributions (including non-contributors, excluding the match) for the 20 percent and 50 percent match groups were 4 and 7 times higher than in the control group, respectively. Second, several additional findings are inconsistent with the full information, rational-saver model. In particular, we find much more modest effects on take-up and amounts contributed from the existing Saver's Credit, which provides an effective match for retirement saving contributions through the tax code; we suspect that the differences may reflect the complexity of the Saver's Credit as enacted, and the way in which its effective match is presented. Taken together, our results suggest that the combination of a clear and understandable match for saving, easily accessible savings vehicles, the opportunity to use part of an income tax refund to save, and professional assistance could generate a significant increase in contributions to retirement accounts, including among middle- and low-income households"--National Bureau of Economic Research web site.

"We use a data set of federal corruption convictions in the U.S. to investigate the causes and consequences of corruption. More educated states, and to a less degree richer states, have less corruption. This relationship holds even when we use historical factors like education in 1928 or Congregationalism in 1890, as instruments for the level of schooling today. The level of corruption is weakly correlated with the level of income inequality and racial fractionalization, and uncorrelated with the size of government. There is a weak negative relationship between corruption and employment and income growth. These results echo the cross-country findings, and support the view that the correlation between development and good political outcomes occurs because more education improves political institutions"--National Bureau of Economic Research web site.

"Exposure to minimum wages at young ages may lead to longer-run effects. Among the possible adverse longer-run effects are decreased labor market experience and accumulation of tenure, lower current labor supply because of lower wages, and diminished training and skill acquisition. Beneficial longer-run effects could arise if minimum wages increase skill acquisition, or if short-term wage increases are long-lasting. We estimate the longer-run effects of minimum wages by using information on the minimum wage history that workers have faced since potentially entering the labor market. The evidence indicates that even as individuals reach their late 20's, they work less and earn less the longer they were exposed to a higher minimum wage, especially as a teenager. The adverse longer-run effects of facing high minimum wages as a teenager are stronger for blacks. From a policy perspective, these longer-run effects of minimum wages are likely more significant than the contemporaneous effects of minimum wages on youths that are the focus of most research and policy debate"--National Bureau of Economic Research web site.

"I explore the effects of education on nonmarket outcomes from both theoretical and empirical perspectives. Examples of outcomes considered include general consumption patterns at a moment in time, savings and the rate of growth of consumption over time, own (adult) health and inputs into the production of own health, fertility, and child quality or well-being reflected by their health and cognitive development. I pay a good deal of attention to the effects of education on health because they are the two most important sources of human capital: knowledge capital and health capital. There is a large literature addressing the nature of their complementarities. In the conceptual foundation section, I consider models in which education has productive efficiency and allocative efficiency effects. I then modify these frameworks to allow for the endogenous nature of schooling decisions, so that observed schooling effects can be traced in part to omitted "third variables" such as an orientation towards the future. An additional complication is that schooling may contribute to a future orientation. The empirical review provides a good deal of evidence for the proposition that the education effects are causal but is less conclusive with regard to the identification of specific mechanisms"--National Bureau of Economic Research web site.

"Gross stocks of foreign assets have increased rapidly relative to national outputs since 1990, and the short-run capital gains and losses on those assets can amount to significant fractions of GDP. These fluctuations in asset values render the national income and product account measure of the current account balance increasingly inadequate as a summary of the change in a country's net foreign assets. Nonetheless, unusually large current account imbalances, especially deficits, should remain high on policymakers' list of concerns, even for the richer and less credit-constrained countries. Extreme imbalances signal the need for large and perhaps abrupt real exchange rate changes in the future, changes that might have undesired political and financial consequences given the incompleteness of domestic and international asset markets. Furthermore, of the two sources of the change in net foreign assets--the current account and the capital gain on the net foreign asset position--the former is better understood and more amenable to policy influence. Systematic government attempts to manipulate international asset values in order to change the net foreign asset position could have a destabilizing effect on market expectations"--National Bureau of Economic Research web site.

"Using the 2003 reduction in dividend tax rates to identify an exogenous change in the after-tax value of dividends to shareholders, we test whether the composition of executives' stock and option holdings is an important determinant of payout policy. We find that when top executives have greater stock ownership, and thus have the incentive to increase dividends for liquidity reasons, there is a significantly greater likelihood of a dividend increase following the 2003 dividend tax cut, whereas no such relation existed in the prior decade when the dividend tax rate was much higher. In contrast, executives with large holdings of stock options, whose value is negatively related to the amount of dividends paid, were less likely to increase dividends both before and after the tax change. These findings hold for dividend increases in general, as well as dividend initiations, and are robust to a rich set of firm and shareholder characteristics. Our results suggest that about one-half of the unanticipated rise in the likelihood of a dividend increase or initiation observed in 2003 can be attributed to the stock vs. option composition of top executive holdings. Many of the firms that increased dividends in 2003 scaled back share repurchases, leaving total payouts little changed. This substitution may have raised the total tax burden on distributions because share repurchases are still tax-advantaged relative to dividends. We find that while dividend-paying firms with a large fraction of individual shareholders saw the biggest stock price gains in response to the tax cut, the market appears to have at least partially anticipated for which firms the tax cut would most likely lead to a substitution of dividends for share repurchases or earnings retention and thus a higher average tax burden on total distributions for individual shareholders"--National Bureau of Economic Research web site.

"This paper studies the dynamics of labor demand at the plant and aggregate levels. The correlation of hours and employment growth is negative at the plant level and positive in aggregate time series. Further, hours and employment growth are about equally volatile at the plant level while hours growth is much less volatile than employment growth in the aggregate data. Given these differences, we specify and estimate the parameters of a plant-level dynamic optimization problem using simulated method of moments to match plant-level observations. Our findings indicate that non-convex adjustment costs are critical for explaining plant-level moments on hours and employment. Aggregation generates time series implications which are broadly consistent with observation. Further, we find that a model with quadratic adjustment costs alone can also broadly match the aggregate facts"--National Bureau of Economic Research web site.

"Over the last thirty years, the use of child safety seats in motor vehicles has increased dramatically, fueled by well publicized information campaigns and legal mandates. In spite of this movement, there is relatively little empirical evidence regarding the efficacy of child safety seats relative to the much cheaper alternative of traditional seat belts. Using data from the Fatality Analysis Reporting System (FARS) on all fatal crashes in the United States from 1975-2003, I find that child safety seats, in actual practice, are no better than seat belts at reducing fatalities among children aged 2-6. This result is robust to a wide range of sensitivity analyses, including controlling for sample selection that arises because the FARS data set includes only crashes in which at least one fatality occurs"--National Bureau of Economic Research web site.

"During the 1990s, human rights and anti-sweatshop activists increased their efforts to improve working conditions and raise wages for workers in developing countries. These campaigns took many different forms: direct pressure to change legislation in developing countries, pressure on firms, newspaper campaigns, and grassroots organizing. This paper analyzes the impact of two different types of interventions on labor market outcomes in Indonesian manufacturing: (1) direct US government pressure, which contributed to a doubling of the minimum wage and (2) anti-sweatshop campaigns. The combined effects of the minimum wage legislation and the anti-sweatshop campaigns led to a 50 percent increase in real wages and a 100 percent increase in nominal wages for unskilled workers at targeted plants. We then examine whether higher wages led firms to cut employment or relocate elsewhere. Although the higher minimum wage reduced employment for unskilled workers, anti-sweatshop activism targeted at textiles, apparel, and footwear plants did not. Plants targeted by activists were more likely to close, but those losses were offset by employment gains at surviving plants. The message is a mixed one: activism significantly improved wages for unskilled workers in sweatshop industries, but probably encouraged some plants to leave Indonesia"--National Bureau of Economic Research web site.

"A number of variables are correlated with subsequent returns on the aggregate US stock market in the 20th Century. Some of these variables are stock market valuation ratios, others reflect patterns in corporate finance or the levels of short- and long-term interest rates. Amit Goyal and Ivo Welch (2004) have argued that in-sample correlations conceal a systematic failure of these variables out of sample: None are able to beat a simple forecast based on the historical average stock return. In this note we show that forecasting variables with significant forecasting power in-sample generally have a better out-of-sample performance than a forecast based on the historical average return, once sensible restrictions are imposed on thesigns of coefficients and return forecasts. The out-of-sample predictive power is small, but we find that it is economically meaningful. We also show that a variable is quite likely to have poor out-of-sample performance for an extended period of time even when the variable genuinely predicts returns with a stable coefficient"--National Bureau of Economic Research web site.

"This paper studies predatory trading: trading that induces and/or exploits other investors' need to reduce their positions. We show that if one trader needs to sell, others also sell and subsequently buy back the asset. This leads to price overshooting and a reduced liquidation value for the distressed trader. Hence, the market is illiquid when liquidity is most needed. Further, a trader profits from triggering another trader's crisis, and the crisis can spill over across traders and across markets"--National Bureau of Economic Research web site.

"We develop a monopolistically competitive model of trade with firm heterogeneity - in terms of productivity differences - and endogenous differences in the `toughness' of competition across markets - in terms of the number and average productivity of competing firms. We analyze how these features vary across markets of different size that are not perfectly integrated through trade; we then study the effects of different trade liberalization policies. In our model, market size and trade affect the toughness of competition, which then feeds back into the selection of heterogeneous producers and exporters in that market. Aggregate productivity and average markups thus respond to both the size of a market and the extent of its integration through trade (larger, more integrated markets exhibit higher productivity and lower markups). Our model remains highly tractable, even when extended to a general framework with multiple asymmetric countries integrated to different extents through asymmetric trade costs. We believe this provides a useful modeling framework that is particularly well suited to the analysis of trade and regional integration policy scenarios in an environment with heterogeneous firms and endogenous markups"--National Bureau of Economic Research web site.

"Housing is a major component of wealth. Since house prices fluctuate considerably over time, it is important to understand how these fluctuations affect households' consumption decisions. Rising house prices may stimulate consumption by increasing households' perceived wealth, or by relaxing borrowing constraints. This paper investigates the response of household consumption to house prices using UK micro data. We estimate the largest effect of house prices on consumption for older homeowners, and the smallest effect, insignificantly different from zero, for younger renters. This finding is consistent with heterogeneity in the wealth effect across these groups. In addition, we find that regional house prices affect regional consumption growth. Predictable changes in house prices are correlated with predictable changes in consumption, particularly for households that are more likely to be borrowing constrained, but this effect is driven by national rather than regional house prices and is important for renters as well as homeowners, suggesting that UK house prices are correlated with aggregate financial market conditions"--National Bureau of Economic Research web site.

"We model the interplay between cash and debt policies in the presence of financial constraints. While saving cash allows financially constrained firms to hedge against future income shortfalls, reducing debt - "saving borrowing capacity" - is a more effective way of securing future investment in high cash flow states. This trade-off implies that constrained firms will allocate excess cash flows into cash holdings if their hedging needs are high (i.e., if the correlation between operating cash flows and investment opportunities is low). However, constrained firms will use excess cash flows to reduce current debt if their hedging needs are low. The empirical examination of cash and debt policies of a large sample of constrained and unconstrained firms reveals evidence that is consistent with our theory. In particular, our evidence shows that financially constrained firms with high hedging needs have a strong propensity to save cash out of cash flows, while showing no propensity to reduce outstanding debt. In contrast, constrained firms with low hedging needs systematically channel free cash flows towards debt reduction, as opposed to cash savings. Our analysis points to an important hedging motive behind standard financial policies such as cash and debt management. It suggests that cash should not be viewed as negative debt"--National Bureau of Economic Research web site.

"To American and European economists in 1945, the countries of Asia were unpromising candidates for high economic growth. In 1950 even the most prosperous of these countries had a per capita income less than 25 percent of that of the United States. Between the mid-1960s and the end of the twentieth century, however, many of the countries of South and Southeast Asia experienced vigorous economic growth, some with growth rates far exceeding the previous growth rates of the industrialized countries. Forecasts that the region%u2019s population growth would outstrip its capacity to feed itself, and that its economic growth would falter, proved to be incorrect. Growth rates will probably continue at high levels in Southeast Asia for at least another generation. This forecast is based on 4 factors: the trend toward rising labor force participation rates, the shift from low to high productivity sectors, continued increases in the educational level of the labor force, and other improvements in the quality of output that are at present not accurately measured in national income accounts"--National Bureau of Economic Research web site.

"This paper provides an empirical analysis of the risk of trading revenues of U.S. commercial banks. We collect quarterly data on trading revenues, broken down by business line, as well as the Value at Risk-based market risk charge. The overall picture from these preliminary results is that there is a fair amount of diversification across banks and within banks across business lines. These low correlations do not corroborate systemic risk concerns. Neither is there evidence that the post-1998 period has witnessed an increase in volatility of trading revenues"--National Bureau of Economic Research web site.

"This paper examines why some employers provide matching contributions to 401(k) plans in company stock and explores the implications of match policy for employee retirement wealth. Unlike stock option grants to non-executives, a firm's decision to match in company stock does not appear to be strongly correlated with cash flow or with measures of the benefits of aligning incentives of employees and employers. Rather, we find evidence that firms are more likely to provide the match in company stock if firm risk is low (i.e. lower stock price volatility and lower bankruptcy risk) and employees are also covered by a defined benefit plan. These findings suggest that firms consider the retirement security of their workers in making the match decision, either because firms want to minimize the risk of violating their fiduciary responsibility or because employees more fully value company stock at companies with lower firm-specific risk. Evidence also indicates that firms may want to match in company stock to boost employee ownership, perhaps to help deter takeovers, or because of the tax advantages for dividends on the company stock match. Simulation results suggest that sufficiently risk-tolerant individuals actually prefer a 401(k) plan at a company with a company stock match to a plan at a company with an unrestricted match, unless the equity premium is reduced substantially"--National Bureau of Economic Research web site.

"If interest rates (country spreads) rise, debt can rapidly be subject to a snowball effect, which then becomes self-fulfilling with regard to the fundamentals themselves. This is a market imperfection, because we cannot be confident that the unaided market will choose the good equilibrium' over the bad equilibrium'. We see here a fundamental flaw in the process of market discipline. We propose a policy intervention to deal with this structural weakness in the mechanisms of international capital flows. This is based on a simple taxonomy that enables us to break down the origin of crises into three components: a crisis of confidence (spreads and currency crisis), a crisis of fundamentals (real growth rate), and a crisis of economic policy (primary deficit). The policy would seek to short-circuit confidence crises, partly by using IMF support to improve ex ante incentives"--National Bureau of Economic Research web site.

"This review essay examines whether too-big-to-fail is as serious a problem as Gary Stern and Ron Feldman contend. This essay argues that Stern and Feldman overstate the importance of the too-big-to-fail problem and do not give enough credit to the FDICIA legislation of 1991 for improving bank regulation and supervision. However, this criticism of the Stern and Feldman book does not detract from many of its messages. Even if the too-big-to-fail problem is not as serious as they contend, the policies they outline can make it less likely that a banking crisis will occur even if driven by other factors"--National Bureau of Economic Research web site.

"Because minorities typically fare poorly on standardized tests, job testing is thought to pose an equity-efficiency trade-off: testing improves selection but reduces minority hiring. We evaluate this trade-off using data from a national retail firm whose 1,363 stores switched from informal to test-based worker screening. We find that testing yielded more productive hires -- raising median tenure by 10 percent and reducing the frequency of firing for cause. Consistent with prior research, minorities performed significantly worse on the test. Yet, testing had no measurable impact on minority hiring, and productivity gains were uniformly large among minorities and non-minorities. We show formally that these results imply that employers were effectively statistically discriminating prior to the introduction of testing -- that is, their screening practices already accounted for expected productivity differences between applicant groups. Consequently, testing improved selection of both minority and non-minority applicants, but did not alter the racial composition of hiring"--National Bureau of Economic Research web site.

"We examine an economy in which the cost of consuming some goods can be reduced by making commitments to consumption levels independent of the state. For example, it is cheaper to produce housing services via owner-occupied than rented housing, but the transactions costs associated with the former prompt relatively inflexible housing consumption paths. We show that consumption commitments can cause risk-neutral consumers to care about risk, creating incentives to both insure risks and bunch uninsured risks together. For example, workers may prefer to avoid wage risk while bearing an unemployment risk that is concentrated in as few states as possible"--National Bureau of Economic Research web site.

"This paper examines the role of the federal government in the market for terrorism reinsurance. We investigate the stock price response of affected industries to a sequence of thirteen events culminating in the enactment of the Terrorism Risk Insurance Act (TRIA) of 2002. In the industries most likely to be affected by TRIA banking, construction, insurance, real estate investment trusts, transportation, and public utilities the stock price effect was primarily negative. The Act was at best value-neutral for property-casualty insurers because it eliminated the option not to offer terrorism insurance. The negative response of the other industries may be attributable to the Act's impeding more efficient private market solutions, failing to address nuclear, chemical, and biological hazards, and reducing market expectations of federal assistance following future terrorist attacks"--National Bureau of Economic Research web site.

"This paper investigates the determinants of vertical integration using data from the UK manufacturing sector. We find that the relationship between a downstream (producer) industry and an upstream (supplier) industry is more likely to be vertically integrated when the producing industry is more technology intensive and the supplying industry is less technology intensive. Moreover, both of these effects are stronger when the supplying industry accounts for a large fraction of the producer's costs. These results are generally robust and hold with alternative measures of technology intensity, with alternative estimation strategies, and with or without controlling for a number of firm and industry-level characteristics. They are consistent with the incomplete contract theories of the firm that emphasize both the potential costs and benefits of vertical integration in terms of investment incentives"--National Bureau of Economic Research web site.

"For decades, geneticists and social scientists have relied on sibling correlations as indicative of the effects of genes and environment on behavioral traits and socioeconomic outcomes. The current paper advances this line of inquiry by exploring sibling similarity across a variety of socioeconomic outcomes and by providing answers to two relatively under-examined questions: do siblings' socioeconomic statuses diverge or converge across the life course? And do siblings from demographic groups that putatively differ on the degree of opportunity they enjoy vary with respect to how similar they turn out? Findings inform theoretical debates over parental investment models, especially in relation to diverging opportunities and capital constraints, and life course status attainment models. We report three new findings. First, sibling resemblance in occupational prestige is explained almost entirely by shared education, and sibling resemblance in family income is explained almost entirely by the combination of shared education, occupational prestige, and earnings. This is contrasted to sibling resemblance in earnings and wealth, as siblings retain 60 percent of their resemblance in earnings once we control for education and occupational prestige, and siblings retain more than 30 percent of their resemblance in wealth once we control for all other socioeconomic outcomes. Second, across the life course, siblings converge in earnings and income and maintain stable correlations in education, occupational prestige, and wealth. Third, black siblings have significantly lower correlations on earnings and income than nonblack siblings overall, but black siblings dramatically converge in income across the life course -- in their twenties black siblings have a .181 correlation in income and above age 40 they have a .826 correlation in income -- suggesting almost complete social reproduction in income by the fifth decade of life for African Americans. This pattern does not hold for nonblack siblings. Furthermore, when we split the sample by class and age, we find the opposite effect: by age 40 and above, siblings from higher SES families tend to increase in their resemblance while those from lower SES families do not. Descriptive accounts about the openness of American society, then, strongly depend on which group we are talking about and at which stage in the life course we measure economic status"--National Bureau of Economic Research web site.

"While much research in political economy points out the benefits of 'limited government,' political scientists have long emphasized the problems created in many less developed nations by 'weak states,' which lack the power to tax and regulate the economy and to withstand the political and social challenges from non-state actors. I construct a model in which the state apparatus is controlled by a self-interested ruler, who tries to divert resources for his own consumption, but who can also invest in socially productive public goods. Both weak and strong states create distortions. When the state is excessively strong, the ruler imposes such high taxes that economic activity is stifled. When the state is excessively weak, the ruler anticipates that he will not be able to extract rents in the future and underinvests in public goods. I show that the same conclusion applies in the analysis of both the economic power of the state (i.e., its ability to raise taxes) and its political power (i.e., its ability to remain entrenched from the citizens). I also discuss how under certain circumstances, a different type of equilibrium, which I refer to as "consensually-strong state equilibrium," can emerge whereby the state is politically weak but is allowed to impose high taxes as long as a sufficient fraction of the proceeds are invested in public goods. The consensually-strong state might best correspond to the state in OECD countries where taxes are high despite significant control by the society over the government"--National Bureau of Economic Research web site.

"This paper studies the choice of electoral rules, in particular, the question of minority representation. Majorities tend to disenfranchise minorities through strategic manipulation of electoral rules. With the aim of explaining changes in electoral rules adopted by US cities (particularly in the South), we show why majorities tend to adopt "winner-take-all" city-wide rules (at-large elections) in response to an increase in the size of the minority when the minority they are facing is relatively small. In this case, for the majority it is more effective to leverage on its sheer size instead of risking to concede representation to voters from minority-elected districts. However, as the minority becomes larger (closer to a fifty-fifty split), the possibility of losing the whole city induces the majority to prefer minority votes to be confined in minority-packed districts. Single-member district rules serve this purpose. We show empirical results consistent with these implications of the model"--National Bureau of Economic Research web site.

"Agents are often better informed than the clients who hire them and may exploit this informational advantage. Real-estate agents, who know much more about the housing market than the typical homeowner, are one example. Because real estate agents receive only a small share of the incremental profit when a house sells for a higher value, there is an incentive for them to convince their clients to sell their houses too cheaply and too quickly. We test these predictions by comparing home sales in which real estate agents are hired by others to sell a home to instances in which a real estate agent sells his or her own home. In the former case, the agent has distorted incentives; in the latter case, the agent wants to pursue the first-best. Consistent with the theory, we find homes owned by real estate agents sell for about 3.7 percent more than other houses and stay on the market about 9.5 days longer, even after controlling for a wide range of housing characteristics. Situations in which the agent's informational advantage is larger lead to even greater distortions"--National Bureau of Economic Research web site.

"Does bounded rationality make paternalism more attractive? This Essay argues that errors will be larger when suppliers have stronger incentives or lower costs of persuasion and when consumers have weaker incentives to learn the truth. These comparative statics suggest that bounded rationality will often increase the costs of government decisionmaking relative to private decisionmaking, because consumers have better incentives to overcome errors than government decisionmakers, consumers have stronger incentives to choose well when they are purchasing than when they are voting and it is more costly to change the beliefs of millions of consumers than a handful of bureaucrats. As such, recognizing the limits of human cognition may strengthen the case for limited government"--National Bureau of Economic Research web site.

"We analyze and assess new evidence on employment dynamics from a new data source--the National Establishment Time Series (NETS). The NETS offers advantages over existing data sources for studying employment dynamics, including tracking business establishment relocations that can contribute to job creation or destruction on a regional level. Our primary purpose in this paper is to assess the reliability of the NETS data along a number of dimensions, and we conclude that it is a reliable data source although not without limitations. We also illustrate the usefulness of the NETS data by reporting, for California, a full decomposition of employment change into its six constituent processes, including job creation and destruction stemming from business relocation, which has figured prominently in policy debates but on which there has been no systematic evidence"--National Bureau of Economic Research web site.

"Today, no economist studying the spatial economy of urban areas would ignore the effects of race on housing markets and labor market opportunities, but this was not always the case. Through what can be seen as a consistent and integrated research plan, John Kain developed many central ideas of urban economics but, more importantly, legitimized and encouraged scholarly consideration of the geography of racial opportunities. His provocative (and prescient) study of the linkage between housing segregation and the labor market opportunities of Blacks was a natural outgrowth of his prior work on employment decentralization and housing constraints on Black households. His more recent program of research on school outcomes employing detailed administrative data was an extension of the same empirical interest in how the economic opportunities of minority households vary with location. This paper identifies the influence of John Kain's ideas on different areas of research and suggests that his scientific work was thoroughly interrelated"--National Bureau of Economic Research web site.

"This paper studies the implications of the circulation of interest bearing regional debt in a monetary union. Does the circulation of this debt have the same monetary implications as the printing of money by a central government? Or are the obligations of this debt simply backed by future taxation with no inflationary consequences? We argue here that both outcomes can arise in equilibrium. In the model economy we consider there are multiple equilibria which reflect the perceptions of agents regarding the manner in which the debt obligations will be met. In one equilibrium, termed Ricardian, the future obligations are met with taxation by a regional government while in the other, termed Monetization, the central bank is induced to print money to finance the region's obligations. The multiplicity of equilibria reflects a commitment problem of the central bank. A key indicator of the selected equilibrium is the distribution of the holdings of the regional debt. We use the model to assess the impact of policy measures, such as fiscal restrictions, within a monetary union"--National Bureau of Economic Research web site.

"We show that the when one takes into account the global equilibrium ramifications of an unwinding of the US current account deficit, currently estimated at 5.4% of GDP, the potential collapse of the dollar becomes considerably larger--more than 50% larger--than our previous estimates (Obstfeld and Rogoff 2000a). That global capital markets may have deepened (as emphasized by US Federal Reserve Chairman Alan Greenspan) does not affect significantly the extent of dollar decline in the wake of global current account adjustment. Rather, the dollar adjustment to global current account rebalancing depends more centrally on the level of goods-market integration. Whereas the dollar's decline may be benign as in the 1980s, we argue that the current conjuncture more closely parallels the early 1970s, when the Bretton Woods system collapsed. Finally, we use our model to dispel some common misconceptions about what kinds of shifts are needed to help close the US current account imbalance. Faster growth abroad helps only if it is relatively concentrated in nontradable goods; faster productivity growth in foreign tradable goods is more likely to exacerbate the US adjustment problem"--National Bureau of Economic Research web site.

"In this paper we compare sources of economic growth in Japan and the United States from 1975 through 2003, focusing on the role of information technology (IT). We have adjusted Japanese data to conform to U.S. definitions in order to provide a rigorous comparison between the two economies. The adjusted data show that the share of the Japanese gross domestic product devoted to investment in computers, telecommunications equipment, and software rose sharply after 1995. The contribution of total factor productivity growth from the IT sector in Japan also increased, while the contributions of labor input and productivity growth from the Non-IT sector lagged far behind the United States. Our projection of potential economic growth in Japan from for the next decade is substantially below that in the United States, mainly due to slower growth of labor input. Our projections of labor productivity growth in the two economies are much more similar"--National Bureau of Economic Research web site.

"We revisit the debate over whether political institutions cause economic growth, or whether, alternatively, growth and human capital accumulation lead to institutional improvement. We find that most indicators of institutional quality used to establish the proposition that institutions cause growth are constructed to be conceptually unsuitable for that purpose. We also find that some of the instrumental variable techniques used in the literature are flawed. Basic OLS results, as well as a variety of additional evidence, suggest that a) human capital is a more basic source of growth than are the institutions, b) poor countries get out of poverty through good policies, often pursued by dictators, and c) subsequently improve their political institutions"--National Bureau of Economic Research web site.

"New York has been remarkably successful relative to any other large city outside of the sunbelt and it remains the nation's premier metropolis. What accounts for New York's rise and continuing success? The rise of New York in the early nineteenth century is the result of technological changes that moved ocean shipping from a point-to-point system to a hub and spoke system; New York's geography made it the natural hub of this system. Manufacturing then centered in New York because the hub of a transport system is, in many cases, the ideal place to transform raw materials into finished goods. This initial dominance was entrenched by New York's role as the hub for immigration. In the late 20th century, New York's survival is based almost entirely on finance and business services, which are also legacies of the port. In this period, New York's role as a hub still matters, but it is far less important than the edge that density and agglomeration give to the acquisition of knowledge"--National Bureau of Economic Research web site.

"We study resource allocation within households in Cote d'Ivoire. In Cote d'Ivoire, as in much of Africa, husbands and wives farm separate plots, and there is some specialization by gender in the crops that are grown. These different crops are differentially sensitive to particular kinds of rainfall shocks. We find that conditional on overall levels of expenditure, the composition of household expenditure is sensitive to the gender of the recipient of a rainfall shock. For example, rainfall shocks associated with high yields of women's crops shift expenditure towards food. Strong social norms constrain the use of profits from yam cultivation, which is carried out almost exclusively by men. In line with these norms, we find that rainfall-induced fluctuations in income from yams are transmitted to expenditures on education and food, not to expenditures on private goods (like alcohol and tobacco). We reject the hypothesis of complete insurance within households, even with respect to publicly observable weather shocks. Different sources of income are allocated to different uses depending upon both the identity of the income earner and upon the origin of the income"--National Bureau of Economic Research web site.

"Long-term care represents one of the largest uninsured financial risks facing the elderly in the United States. Whether the small size of this market is driven primarily by supply side market imperfections or by limitations to demand, however, is unresolved, largely due to the paucity of data about the structure of the private market. We provide what is to our knowledge the first empirical evidence on the pricing and benefit structure of long-term care insurance policies. We estimate that the typical policy purchased by a 65-year old has an average pricing load of about 18 percent and has a very limited benefit structure, covering only one-third of the expected present discounted value of long-term care expenditures. These findings are consistent with the presence of supply side market imperfections. However, we also find enormous gender differences in pricing -- typical loads are 44 cents on the dollar for men but better than actuarially fair for women %uF818 that do not translate into differences in coverage. And, although purchased policies provide limited benefits, we demonstrate that more comprehensive policies are widely-available at similar loads, but are rarely purchased. These findings suggest that while supply-side market imperfections exist, they are not the primary cause of the small size of the private long-term care insurance market"--National Bureau of Economic Research web site.

"Patients needing kidney transplants may have willing donors who cannot donate to them because of blood or tissue incompatibility. Incompatible patient-donor pairs can exchange donor kidneys with other such pairs. The situation facing such pairs resembles models of the "double coincidence of wants," and relatively few exchanges have been consummated by decentralized means. As the population of available patient-donor pairs grows, the frequency with which exchanges can be arranged will depend in part on how exchanges are organized. We study the potential frequency of exchanges as a function of the number of patient-donor pairs, and the size of the largest feasible exchange. Developing infrastructure to identify and perform 3-way as well as 2-way exchanges will have a substantial effect on the number of transplants, and will help the most vulnerable patients. Larger than 3-way exchanges have much smaller impact. Larger populations of patient-donor pairs increase the percentage of patients of all kinds who can find exchanges"--National Bureau of Economic Research web site.

"In connection with an earlier paper on the exchange of live donor kidneys (Roth, Sonmez, and Unver 2004) the authors entered into discussions with New England transplant surgeons and their colleagues in the transplant community, aimed at implementing a Kidney Exchange program. In the course of those discussions it became clear that a likely first step will be to implement pairwise exchanges, between just two patient-donor pairs, as these are logistically simpler than exchanges involving more than two pairs. Furthermore, the experience of these surgeons suggests to them that patient and surgeon preferences over kidneys should be 0-1, i.e. that patients and surgeons should be indifferent among kidneys from healthy donors whose kidneys are compatible with the patient. This is because, in the United States, transplants of compatible live kidneys have about equal graft survival probabilities, regardless of the closeness of tissue types between patient and donor (unless there is a rare perfect match). In the present paper we show that, although the pairwise constraint eliminates some potential exchanges, there is a wide class of constrained-efficient mechanisms that are strategy-proof when patient-donor pairs and surgeons have 0-1 preferences. This class of mechanisms includes deterministic mechanisms that would accomodate the kinds of priority setting that organ banks currently use for the allocation of cadaver organs, as well as stochastic mechanisms that allow considerations of distributive justice to be addressed"--National Bureau of Economic Research web site.

"I discuss economic approaches to the demand for harmfully addictive substances and estimate time-series demand functions for the period from 1975 through 2003. My estimates suggest that changes in price can explain a good deal of the observed changes in cigarette smoking, binge alcohol drinking, and marijuana use by high school seniors. For example, the 70 percent increase in the real price of cigarettes since 1997 due to the Medicaid Master Settlement Agreement explains almost all of the 12 percentage point reduction in the cigarette smoking participation rate since that year. The 7 percent increase in the real price of beer between 1990 and 1992 due to the Federal excise tax hike on that beverage in 1991 accounts for almost 90 percent of the 4 percentage point decline in binge drinking in the period at issue. The wide swings in the real price of marijuana explain 70 percent of the reduction in particpation from 1975 to 1992, 60 percent of the subsequent growth to 1997, and almost 60 percent of the decline since that year. I conclude with implications for tax policy and for the lively and contentious debate concerning the legalization of marijuana, cocaine, and heroin"--National Bureau of Economic Research web site.

"This paper is the first to investigate the importance of geography in explaining equity market participation. We provide evidence to support two distinct local area effects. The first is a community ownership effect, that is, individuals are influenced by the investment behavior of members of their community. Specifically, a ten percentage-point increase in equity market participation of the members of one's community makes it two percentage points more likely that the individual will invest in stocks. We find further evidence that the influence of community members is strongest for less financially sophisticated households and strongest within peer groups' as defined by age and income categories. The second is that proximity to publicly-traded firms also increases equity market participation. In particular, the presence of publicly-traded firms within 50 miles and the share of U.S. market value headquartered within the community are significantly correlated with equity ownership of individuals. These results are quite robust, holding up in the presence of a wide range of individual and community controls, instrumental variables estimation, the inclusion of individual fixed effects, and specification checks to rule out that the relations are driven solely by ownership of the stock of one's employer"--National Bureau of Economic Research web site.

"The purpose of this paper is to examine the role of alcohol policies in reducing the incidence of sexually transmitted diseases among youth. Previous research has shown that risky sexual practices (e.g., unprotected sex and multiple partners) that increase the risk of contracting a STD are highly correlated with alcohol use. If alcohol is a cause of risky sexual behavior, then policies that reduce the consumption of alcohol may also reduce the incidence of STDs. In this paper, we examine the relationship between alcohol policies (e.g., beer taxes and statutes pertaining to alcohol sales and drunk driving) and rates of gonorrhea and AIDS among teenagers and young adults. Results indicate that higher beer taxes are associated with lower rates of gonorrhea for males and are suggestive of lower AIDS rates. Strict drunk driving policies in the form of zero tolerance laws may also lower the gonorrhea rate among males under the legal drinking age"--National Bureau of Economic Research web site.