Working-age grandparents supply large amounts of child care, an observation that raises the question of how having grandchildren affects grandparents' own labor supply. Exploiting the unique genealogical design of the PSID and the random variation in the timing when the parents of first-born...

Exploiting admission thresholds in a Regression Discontinuity Design, we study the causal effects of daycare at age 0-2 on cognitive and non-cognitive outcomes at age 8-14. One additional month in daycare reduces IQ by 0.5% (4.5% of a standard deviation). Effects for conscientiousness are small...

"As empirical work in identifying social effects becomes more prevalent, researchers are beginning to struggle in identifying the composition of social interactions within any given reference group. In this article, we present a simple econometric methodology for the separate identification of...

We show that the aggregate Frisch elasticity of labor supply can greatly exceed the corresponding individual-level parameter, and we illustrate the "anatomy" of the former in terms of intensive and extensive margins. The methodology consists of using micro data from the PSID to construct a panel...