Program evaluations often focus on average treatment effects. However, average treatment effects miss important aspects of policy evaluation, such as the impact on inequality and whether treatment harms some individuals. A growing literature develops methods to evaluate such issues by examining...

The authors conclude that just under half of the post-1999 decline in the U.S. labor force participation rate, or LFPR (the proportion of the working-age population that is employed or unemployed and seeking work), can be explained by long-running demographic patterns, such as the retirement of...