4 juillet 2022
Le professeur Bernard Fortin publie un article intitulé « Peer Effects, Self-selection and Dishonesty » dans la revue Journal of Economic Behavior & Organization. L'article est écrit conjointement avec Liza Charrouin et Marie Claire Villeval.
Ci-dessous un résumé du papier que vous pouvez retrouver en PDF: https://www.sciencedirect.com/science/article/pii/S0167268122002207
If individuals tend to behave like their reference group, is it because of peer effects, self-selection, or both? Using a peer effect model allowing for conformity and link formation, we designed a real-effort laboratory experiment in which individuals could misreport their performance and select their peers. Our results reveal both a preference for conformity and homophilous link formation, but only among individuals cheating in isolation. This suggests that such link formation was not motivated by a taste for similarity but by acquiring self-serving information. Importantly, we reject the presence of a self-selection bias in the peer effect estimates by showing that the size of peer effects is similar when identical peers were randomly assigned and when individuals selected them.