Knowledge that Transforms

Using data from the U.S. Decennial Census and the National Longitudinal Surveys, we find little evidence of differences in the return to schooling across racial and ethnic groups, even with attempts to control for ability and measurement error biases. While our point estimates are relatively similar across racial and ethnic groups, our conclusion is driven in part by relatively large standard errors. ; That said, we find no evidence that returns to schooling are lower for African Americans or Hispanics than for non-minorities. As a result, policies that increase education among the low-skilled have a good possibility of increasing economic well-being and reducing inequality. More generally, our analysis suggests further research is needed to better understand the nature of measurement error and ability bias across subgroups in order to fully understand potential heterogeneity in the return to schooling across the population.

This paper uses an estimated demand system that accounts for heterogeneity to calculate and compare the lost consumer surplus from a higher tax on gasoline, a tax on distance, or a subsidy for buying a newer car. We introduce a view of cost-effectiveness that compares policies instead of technologies. Each tax might induce some consumers to drive less, some to switch from two vehicles to one, and some to buy a car instead of an SUV. Our model captures these behaviors. For each rate of tax, we simulate the changes in all such choices and how the new choices affect emissions. We also calculate the equivalent variation and subtract tax revenue to get deadweight loss. Finally, we take the added deadweight loss over the additional abatement as the social marginal cost of abatement, and we plot this curve for several different tax policies.

Metropolitan-Specific Estimates of the Price Elasticity of Supply of Housing, and Their Sources by Richard K. Green, Stephen Malpezzi and Stephen K. Mayo. Published in volume 95, issue 2, pages 334-339 of American Economic Review, May 2005

Theoretical work on experience goods sets out three empirical questions. How accurate is information at initial purchase? How rapidly do consumers learn from product experiences? And how much impact does learning have on purchase decisions? I answer these questions for the case of automobile insurance, using a panel of 18,595 consumers from one firm. My principal findings are: patterns of consumer departures following claims point to learning; consumers enter the firm overly optimistic about its quality and are generally disappointed by experience; and the impact of learning is mitigated by the slow arrival of claims and the development of lock-in.

The rapid growth in the number of foreign students enrolled in American universities has transformed the higher education system, particularly at the graduate level. Many of these newly minted doctorates remain in the United States after receiving their doctoral degrees, so that the foreign student influx can have a significant impact in the labor market for high-skill workers. Using data drawn from the Survey of Earned Doctorates and the Survey of Doctoral Recipients, the study shows that a foreign student influx into a particular doctoral field at a particular time had a significant and adverse effect on the earnings of doctorates in that field who graduated at roughly the same time. A 10 percent immigration-induced increase in the supply of doctorates lowers the wage of competing workers by about 3 percent.

Why the Apple Doesn't Fall Far: Understanding Intergenerational Transmission of Human Capital by Sandra E. Black, Paul J. Devereux and Kjell G. Salvanes. Published in volume 95, issue 1, pages 437-449 of American Economic Review, March 2005

We model an international union as a group of countries deciding to centralize the provision of public goods, or policies, that generate externalities across union members. The trade-off between the benefits of coordination and the loss of independent policymaking endogenously determines size, composition, and scope of the union. Policy uniformity reduces the size of the union, may block the entry of new members, and induces excessive centralization. We study flexible rules with nonuniform policies that reduce these inefficiencies, focusing particularly on arrangements that are relevant to the ongoing debate on the institutional structure of the European Union.

We study time variation in expected excess bond returns. We run regressions of one-year excess returns on initial forward rates. We find that a single factor, a single tent-shaped linear combination of forward rates, predicts excess returns on one-to five-year maturity bonds with R 2 up to 0.44. The return-forecasting factor is countercyclical and forecasts stock returns. An important component of the return-forecasting factor is unrelated to the level, slope, and curvature movements described by most term structure models. We document that measurement errors do not affect our central results.

Questions remain as to whether results from experimental economics are generalizable to real decisions in nonlaboratory settings. Furthermore, questions persist about whether social capital helps mitigate information asymmetries in credit markets. I examine whether behavior in two laboratory games, Trust and a Public Goods, predicts loan repayments to a Peruvian group-lending microfinance program. Since this program relies on social capital to enforce repayment, this tests the external validity of the games. Individuals identified as “trustworthy” by the Trust Game are indeed less likely to default on their loans. No similar support is found for the game's identification of “trusting” individuals.

The rise of Western Europe after 1500 is due largely to growth in countries with access to the Atlantic Ocean and with substantial trade with the New World, Africa, and Asia via the Atlantic. This trade and the associated colonialism affected Europe not only directly, but also indirectly by inducing institutional change. Where “initial” political institutions (those established before 1500) placed significant checks on the monarchy, the growth of Atlantic trade strengthened merchant groups by constraining the power of the monarchy, and helped merchants obtain changes in institutions to protect property rights. These changes were central to subsequent economic growth.