Evaluating policy changes that occur everywhere at the same time is difficult because of the lack of a clear counterfactual. Hoping to address this problem, researchers often proxy for differential exposure using some observed characteristic in the pre-treatment period. As a cautionary tale of...

The number of states that require parental involvement in a minor's decision to terminate a pregnancy has more than doubled since 1988. Congress is currently considering legislation that would further limit access to abortion for minors who reside in states that enforce parental involvement...

The number of states that require parental involvement in a minor's decision to terminate a pregnancy has more than doubled since 1988. Congress is currently considering legislation that would further limit access to abortion for minors who reside in states that enforce parental involvement...