The authors hereby retract the article “Individual and Group Performance Suffers from Social Niche Disruption,” published in the June 2016 issue (pp. 776–785) of The American Naturalist. After receiving a question from a reader about the publicly available data, the authors noticed irregularities in the raw data, which were collected in the laboratory of the third author. Unfortunately, the anomalies in the raw data cannot be sufficiently explained nor corrected. As such, the results drawn from these data can no longer be considered reliable. We regretfully retract this article, whose results we cannot stand behind in full confidence.