title: Looking Similar Promotes Group Stability in a Game-Based Virtual Community.
abstract: OBJECTIVE
  Online support groups are popular Web-based resources that provide tailored information and peer support through virtual communities and fulfill the users' needs for empowerment and belonging. However, the therapeutic potential of online support groups is at present limited by the lack of systematic research on the cognitive mechanisms underlying social group cohesion in virtual communities. We might increase the benefits of participation in online support groups if we gain more insight into the factors that promote long-term commitment to peer support. One approach to foster the therapeutic potential of online support groups could be to increase social selection based on visual similarity.
  
  
  METHODS
  We performed a case study using the popular virtual setting of "World of Warcraft" (Blizzard Entertainment, Irvine, CA). We monitored the social dynamics of a virtual community composed of avatars whose appearance was identical during a period of 3 months, biweekly, for a total of 24 measures.
  
  
  RESULTS
  We observed that this homogeneous community displayed a very high level of group stability over time in terms of the total number of members, the number of members that stayed the same, and the number of arrivals and departures, despite the fact that belonging to a heterogeneous group typically favors the success of the group with respect to game progression.
  
  
  CONCLUSIONS
  Our results confirm that appearance can trigger social selection in online virtual communities. Displaying a similar appearance could be one way to strengthen social bonds among peers who share various health and well-being issues. Thus, the therapeutic potential of online support groups could be promoted through visual cohesion.
authors.affiliation: 1 Institut Universitaire en Santé Mentale de Québec , Quebec City, Quebec, Canada .|2 Faculty of Medicine, Laval University , Quebec City, Quebec, Canada .
authors.forename: Catherine L
authors.initials: CL
authors.lastname: Lortie
authors.affiliation: 1 Institut Universitaire en Santé Mentale de Québec , Quebec City, Quebec, Canada .|2 Faculty of Medicine, Laval University , Quebec City, Quebec, Canada .
authors.forename: Matthieu J
authors.initials: MJ
authors.lastname: Guitton