Social interactions and social preferences in social networks
研究了社交网络中个体持有利他偏好时的社会互动，发现利他主义是同伴效应的严重混淆因素，考虑社会偏好后同伴效应估计值约减少36%，并能区分出溢出效应和外部性效应。
Summary We study social interactions when individuals hold altruistic preferences in social networks. Rich network features can be captured in the resulting best response function. The inward network links provide unique information for identifying the altruism effect. We demonstrate that the often ignored altruism is another serious confounding factor of peer effects. Specifically, the estimates of peer effects are approximately 36% smaller after taking into account social preferences. Furthermore, we could identify two types of effects caused by peers' outcomes: the spillover effects and the externality effects, which is impossible in a conventional social interactions model based on the self‐interest hypothesis.