Betrayal aversion is an important factor in the decision to trust.Trust in members of one's own social group (ingroup members) is often higher than that in members of other groups (outgroup members). In this paper, I study (i) how betrayal aversion contributes to in-/outgroup discrimination in...

This chapter discusses three main objectives: (1) the contribution to the body of literature of consumer behavior and demonstrates that consumer’s groups knowledge (i.e., two-person dyads, families, peer or friendship groups, teams, and other social units) is relevant for study by consumer...

The growth of collaborative technologies has spurred the development of projects such as Wikipedia, in which large groups of volunteers contribute to production in a decentralized and open format. The author analyzes how these methods of peer-based production can be applied to advance...

Recent studies for primary and secondary education find positive effects of the share of girls in the classroom on achievement of boys and girls. This study examines whether these results can be extrapolated to post-secondary education. We conduct an experiment in which the shares of girls in...

Peer-To-Peer advertising is the newest trend in the age of online advertising. The Facebook gift phenomenon or invention of Application directories in Orkut or rapidly increasing usage of Avatars in Second-Life, all lead to new market dynamics using the latest advertising mode. In this paper we...

By providing feedback to customers on home electricity and natural gas usage with a focus on peer comparisons, utilities can reduce energy consumption at a low cost. We analyze data from two large-scale, random-assignment field experiments conducted by utility companies providing electricity...

Peer influence in social networks has been studied for over four decades by social scientists and marketing researchers. Due to recent growth of internet technologies and online social networks, research on peer influence has gained even more attention over the last decade. But, most extant...

Group liability in microcredit purports to improve repayment rates through peer screening, monitoring, and enforcement. However, it may create excessive pressure, and discourage reliable clients from borrowing. Two randomized trials tested the overall effect, as well as specific mechanisms....