Peer effects in collaborative content generation : the evidence from German Wikipedia


Slivko, Olga


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URL: https://ub-madoc.bib.uni-mannheim.de/37536
URN: urn:nbn:de:bsz:180-madoc-375366
Document Type: Working paper
Year of publication: 2014
The title of a journal, publication series: ZEW Discussion Papers
Volume: 14-128
Place of publication: Mannheim
Publication language: English
Institution: Sonstige Einrichtungen > ZEW - Leibniz-Zentrum für Europäische Wirtschaftsforschung
MADOC publication series: Veröffentlichungen des ZEW (Leibniz-Zentrum für Europäische Wirtschaftsforschung) > ZEW Discussion Papers
Subject: 330 Economics
Classification: JEL: D83 , D85 , I23 , I4 , J31 , Z13,
Keywords (English): Peer effects , user-generated content , Wikipedia , network of editors , direct and indirect peers
Abstract: On Wikipedia, the largest online encyclopedia, editors who contribute to the same articles and exchange comments on articles’ talk pages work in collaborative manner engaging in communication about their work. Thus they can be considered as peers who are likely to influence each other. In this article, I examine whether the activity of these peers, measured by the average amount of peer contributions or by the number of peers, yields spillovers to the amount of contributions by individuals. The partially overlapping group structure allows to identify peer effects and to use the number of the indirect peers as an instrument for the activity and the number of direct peers. The results show that, while controlling for observable editor and peer characteristics, an increase in the monthly average peer contribution by 1 per cent increases the amount of individual monthly contributions to Wikipedia (among individuals that contribute to Wikipedia every month) by up to 0.4 per cent. Similarly, spillovers coming from the number of peers yield a positive effect of 0.17 per cent per article to 0.05 per cent for overall monthly contributions to Wikipedia.

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Slivko, Olga (2014) Peer effects in collaborative content generation : the evidence from German Wikipedia. Open Access ZEW Discussion Papers Mannheim 14-128 [Working paper]
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