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Sustaining Cooperation with Multiple Relationships

嘉宾介绍

程琛，美国西北大学(Northwestern University) 凯洛格商学院博士，美国约翰-霍普金斯大学(Johns Hopkins University)商学院助理教授。主要研究领域为微观经济理论、政治经济学和社会网络。研究发表于American Economic Journal: Microeconomics等期刊。

报告主题

We study the sustaining of cooperation with multiple relationships on networks. That is, agents interact with each other on potentially more than one relationship. We examine the following two questions: First, given the network structure, how agents’ cooperating incentives will be affected by having multiple relationships, i.e., multiplexity; secondly, when we endogenize network formation, if an agent has one additional relationship to establish, will they choose to link with a current neighbor or a stranger, i.e., to multiplex or not? We provide the following theoretical predictions: 1) Agents have strong incentives to multiplex and may fall into a ``multiplexity trap’’. This could happen even when cooperating with strangers is more efficient. 2) Agents prefer multiplexing to linking with strangers when a society’s degree distribution is not too dispersed, or when it has a very dispersed degree distribution but exhibits positive assortivity.  We also provide empirical evidence that supports our theoretical predictions.

【讲座地点】：明斋221 备有简餐

【主办单位】：清华大学社科学院经济学所

【讲座时间】：2018年12月13日12:00

【主 持 人】：谢丹夏 清华大学社科学院经济所助理教授