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J Eur Econ Assoc. 2013 Jun 3;11(3):548-573. doi: 10.1111/jeea.12015.

Peer Effects in Pro-Social Behavior: Social Norms or Social Preferences?

Author information

1
University of Nottingham. School of Economics, Sir Clive Granger Building, University Park, Nottingham NG7 2RD, United Kingdom.
2
CESifo and IZA.

Abstract

We compare social preference and social norm based explanations for peer effects in a three-person gift-exchange experiment. In the experiment a principal pays a wage to each of two agents, who then make effort choices sequentially. In our baseline treatment we observe that the second agent's effort is influenced by the effort choice of the first agent, even though there are no material spillovers between agents. This peer effect is predicted by the Fehr-Schmidt (1999) model of social preferences. As we show from a norms-elicitation experiment, it is also consistent with social norms compliance. A conditional logit investigation of the explanatory power of payoff inequality and elicited norms finds that the second agent's effort is best explained by the social preferences model. In further experiments we find that the peer effects change as predicted by the social preferences model. Again, a conditional logit analysis favors an explanation based on social preferences, rather than social norms. Our results suggest that, in our context, the social preferences model provides a parsimonious explanation for the observed peer effect.

KEYWORDS:

experiment; gift-exchange; inequity aversion; measuring social norms; peer effects; social influence; social preferences

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