Public Good Superstars: A Lab-in-the-Field Study of Wikipedia
研究维基百科编辑者的社会偏好（互惠、利他、社会形象）与贡献行为的关系，发现超级明星更亲社会，但社会形象驱动的编辑贡献质量较低。
Abstract Many field public goods are provided by a small number of contributors: the ‘superstars’ of their respective communities. This paper focuses on Wikipedia, one of the largest online volunteering platforms. Over nine consecutive years, we study the relationship between social preferences—reciprocity, altruism and social image—and field cooperation. Wikipedia editors are quite prosocial on average, and superstars even more so. But while reciprocal and social image preferences strongly relate to contribution quantity among casual editors, only social image concerns continue to predict differences in contribution levels between superstars. In addition, we find that social image–driven editors—both casual and superstars—contribute lower-quality content on average. Evidence points to a perverse social incentive effect, as quantity is more readily observable than quality on Wikipedia.