Recent years have witnessed a growing interest among psychologists and other social scientists in subjective wellbeing and happiness. Here we review selected contributions to this development from the literature on behavioral decision theory. In particular, we examine many, somewhat surprising,...

We introduce a game theory model of individual decisions to cooperate by contributing personal resources to group decisions versus by free-riding on the contributions of other members. In contrast to most public-goods games that assume group returns are linear in individual contributions, the...

Many institutions, large or small, make their decisions through some process of deliberation. Nonetheless, deliberating institutions often fail, in the sense that they make judgments that are false or that fail to take advantage of the information that their members have. Micro mistakes can lead...