Online platforms, marketplaces and retailers typically use ranking algorithms to determine the order in which hundreds or thousands of choices are presented to consumers. While ranking algorithms may aid consumer choice, there are concerns they may also lead to socially undesirable outcomes. In...

Health-maximizing and welfare-maximizing behaviors can be at odds, especially among disadvantaged groups, generating health disparities. We estimate a lifecycle model of medication and labor supply decisions using data on HIV-positive men. We evaluate an effective HIV treatment innovation that...