How can naivete about present bias persist despite experience? To answer this question, our experiment investigates participants' ability to learn from their own behavior. Participants decide how much to work on a real effort task on two predetermined dates. In the week preceding each work date,...

The question to what extent social environment affects how individuals govern their groups, has received no special academic attention, yet. Within the framework of a ten-period public goods experi&ment we analyse how social identity affects subjects ́choice of punishment: They may either...

To investigate the external validity of Ultimatum and Dictator game behavior we conduct experiments in field settings with naturally occurring variation in "social framing." Our participants are students at Middlebury College, non-traditional students at Kansas City Kansas Community College...