This paper develops a simple approach to overcome the shortcomings of using a standard, single treatment-effect event study to assess the ability of an empirical model to measure heterogeneous treatment effects. Equally as important, we discuss how the standard errors reported in a typical...

In response to a high incidence of motor vehicle accidents among teens, states have adopted policies that broadly mandate restrictions on novice teen drivers, including more prelicensure education and supervised driving as well as postlicensure curfews and restrictions on the number of...