Family Ruptures, Stress, and the Mental Health of the Next Generation: Comment

Abstract

The empirical methodology used by Persson and Rossin-Slater (2018) to estimate the causal effect of in utero exposure to stress contains a potentially significant flaw. They define the control group in a way that may bias their causal estimates and can lead to the finding of a significant relationship when there is none. In this note, I describe the source of the bias and suggest an alternative specification of the control group. (JEL I12, J12, J13)