In this paper, we study the effect of collaboration network structure on editors' contribution behavior in Wikipedia. Collaboration in Wikipedia is organized around articles, and any two editors co-editing an article have a collaborative relationship. Based on economic theories about network...

The literature on the private provision of public goods suggests an inverse relationship between incentives to contribute and group size. We find, however, that after an exogenous reduction of group size at Chinese Wikipedia, the nonblocked contributors decrease their contributions by 42.8% on...