This paper presents the first analysis of the life course outcomes through late midlife (around age 55) for the participants of the iconic Perry Preschool Project, an experimental high-quality preschool program for disadvantaged African-American children in the 1960s. We discuss the design of...

In a field experiment, a large retail chain's CEO asked managers of treated stores “to do what they can” to reduce personnel turnover. Turnover decreases by a quarter for nine months; a reminder treatment triggers a similar decrease for a shorter period. Treated managers report shifting...

The bootstrap is a method for estimating the distribution of an estimator or test statistic by resampling one's data or a model estimated from the data. Under conditions that hold in a wide variety of econometric applications, the bootstrap provides approximations to distributions of statistics,...