Zhang, Michael; Zhu, Feng - HKUST Business School; Harvard University - 2007
size. This paperempirically tests this relationship using field data from ChineseWikipedia, an online encyclopedia. We … exploit an exogenous reduction ingroup size as a result of the blocking of Wikipedia in mainland Chinaand examine whether … social effectsand group size affect individual incentive to contribute. Consistentwith our model prediction, we find that the …