Group Size and Incentives to Contribute: A Natural Experiment at Chinese Wikipedia

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Group Size and Incentives to Contribute: A Natural Experiment at Chinese Wikipedia is a 2011 journal article by Xiaoquan (Michael), Zhang, Feng Zhu and published in American Economic Review.

[edit] Abstract

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 average. We attribute the cause to social effects: Contributors receive social benefits that increase with both the amount of their contributions and group size, and the shrinking group size weakens these social benefits. Consistent with our explanation, we find that the more contributors value social benefits, the more they reduce their contributions after the block.group size, incentives to contribute, Internet censorship, public goods, social effects, Wikipedia

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