Collaborative Development in Wikipedia

Using 16,068 articles in Wikipedias Medicine Wikiproject, we study the relationship between collaboration and quality. We assess whether certain collaborative patterns are associated with information quality in terms of selfevaluated quality and article viewership. We find that the number of contributors has a curvilinear relationship to information quality, more contributors improving quality but only up to a certain point. Other articles that its collaborators work on also influences the quality of an information artifact, creating an interdependent network of artifacts and contributors. Finally, we see evidence of a recursive relationship between information quality and contributor activity, but that this recursive relationship attenuates over time.