Physical lab experiments have played an instrumental role in sculpting the history of experimental economics, facilitating controlled information conditions, efficient monetary inducements, and exclusive advantages via immediate human interaction and engaging experiences. These unique benefits...

Motivated by a popular perception that Roth accounts are welfare-improving for most people, this paper compares the effects of mandated Traditional (tax-deferred) or Roth (taxprepaid) retirement policies in a controlled laboratory setting. Selection effects, which complicate analyses of...