Knowledge that Transforms

We use admissions lotteries to estimate the effects of attendance at Boston's charter high schools on college preparation, college attendance, and college choice. Charter attendance increases pass rates on the high-stakes exam required for high school graduation in Massachusetts, with especially large effects on the likelihood of qualifying for a state-sponsored college scholarship. Charter attendance has little effect on the likelihood of taking the SAT, but shifts the distribution of scores rightward, moving students into higher quartiles of the state SAT score distribution. Boston's charter high schools also increase the likelihood of taking an Advanced Placement (AP) exam, the number of AP exams taken, and scores on AP Calculus tests. Finally, charter attendance induces a substantial shift from two-to four-year institutions, though the effect on overall college enrollment is modest. The increase in four-year enrollment is concentrated among four-year public institutions in Massachusetts. The large gains generated by Boston's charter high schools are unlikely to be generated by changes in peer composition or other peer effects.

There are two obvious possibilities that can account for the rise in productivity during recent recessions. The first is that the decline in the workforce was not random, and that the average worker was of higher quality during the recession than in the preceding period. The second is that each worker produced more while holding worker quality constant. We call the second effect, "making do with less," that is, getting more effort from fewer workers. Using data spanning June 2006 to May 2010 on individual worker productivity from a large firm, it is possible to measure the increase in productivity due to effort and sorting. For this firm, the second effect-that workers' effort increases-dominates the first effect-that the composition of the workforce differs over the business cycle.

In the past 30 years, wage inequality has increased steeply while real minimum wages have fallen. This paper demonstrates that a general equilibrium model with endogenous skill choice is required to correctly evaluate the implications of minimum wage changes. The minimum wage not only truncates the wage distribution but also affects skill prices and therefore changes the incentives that people face when making educational decisions. The calibrated model suggests—in line with recent empirical literature—that even though minimum wages affect the bottom end of the wage distribution more, their impact on the top end is significant as well.

A substantial empirical literature documents the rise in wage inequality in the American economy. It is silent on whether the increase in inequality is due to components of earnings that are predictable by agents or whether it is due to greater uncertainty facing them. These two sources of variability have different consequences for both aggregate and individual welfare. Using data on two cohorts of American males we find that a large component of the rise in inequality for less skilled workers is due to uncertainty. For skilled workers, the rise is less pronounced.

Much attention has been given to the large increases in safety net spending during the Great Recession. We examine the relationship between poverty, the safety net, and business cycles historically and test whether there has been a significant change in this relationship. We find that post–welfare reform, Temporary Assistance for Needy Families did not respond during the Great Recession and extreme poverty is more cyclical than in prior recessions. Food Stamps and Unemployment Insurance are providing more protection—or no less protection—in the Great Recession, and there is some evidence of less cyclicality for 100% poverty.

Chile is unusual in having long-term experience with nationwide school vouchers. A key criticism of school voucher systems is that they make it easier for private schools to attract better teachers to the detriment of public schools. This paper uses longitudinal data from Chile to estimate a discrete choice dynamic programming (DCDP) model of teacher and nonteacher labor supply decisions and to explore how wage policies affect the composition of the teacher labor force in public and private schools. In the model, individuals first decide whether to get a teaching degree and then choose annually from among five work/home sector alternatives. Empirical results show that private voucher schools attract better teachers than public schools. However, the existence of the private voucher sector also draws higher-productivity individuals into the teaching profession.

We study employment reallocation across employers through the lens ofa dynamic job ladder model. Workers always agree on a ranking ofemployers at all points in time and search for better jobs both offand on the job. A parsimonious version of the model fits well the timeseries of gross worker flows by employer size from newly available USdata from the Job Openings and Labor Turnover Survey. Focusing on the US experience in and around the Great Recession, our evidence indicates that the job ladder stopped working then and has not fully resumed yet.

In many countries, grade retention is viewed as a useful tool for helping students who fall behind in their achievement. We show how the effect of grade retention varies by abilities, by timing of retention and as time since retention elapses. While existing studies of grade retention also recognize the importance of studying variation by abilities and timing, the existing methods are not well-equipped to deal with the possibility that students retained at different grades differ in unobservable abilities (dynamic selection) and the effects of retention also vary by the student's abilities and the time at which the student is retained. We extend existing factor analytic methods for identifying treatment effects to control for dynamic selection in our time-varying treatment effect setting. This approach can be understood as a hybrid between a control function and a generalization of the fixed effects approach. Applying our method to nationally-representative, longitudinal data, we find evidence of dynamic selection into retention and that the treatment effect of retention varies considerably across grades and unobservable abilities of students. Our strategy can be applied more broadly to many time-varying or multiple treatment settings.

We use linked employer-employee data from Italy to explore the relationship between exports and wages. Exploiting the 1992 devaluation of the lira, we show that exporting firms both pay a wage premium above what their workers would earn in the outside labor market (the “rent-sharing” effect) and employ workers whose skills command a higher price after the devaluation (the “skill composition” effect). The latter only emerges once we allow for the value of workers’ skills to differ in the pre- and post-devaluation periods. We also document that the export wage premium is larger for workers with more export-related experience.

There are persistent differences in self-reported subjective well-being across US metropolitan areas, and residents of declining cities appear less happy than others. Yet some people continue to move to these areas, and newer residents appear to be as unhappy as longer-term residents. While historical data on happiness are limited, the available facts suggest that cities that are now declining were also unhappy in their more prosperous past. These facts support the view that individuals do not maximize happiness alone but include it in the utility function along with other arguments. People may trade off happiness against other competing objectives.