Friends With Performance Benefits: A Meta-Analysis on the Relationship Between Friendship and Group Performance

Seunghoo Chung, Robert B. Lount, Hee Man Park, Ernest S. Park

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


The current article examines if, and under which conditions, there exists a positive relationship between working with friends and group performance. To do so, using data from 1,016 groups obtained from 26 studies, we meta-analyzed comparisons of the performance of friendship groups versus acquaintance groups. Results show that friendship has a significant positive effect on group task performance (Cohen’s d = 0.31). Furthermore, this relationship was moderated by group size (i.e., the positive effect of friendship on performance increased with group size) and task focus (i.e., friendship groups performed better than acquaintance groups on tasks requiring a high quantity of output, whereas there was no performance benefit on tasks requiring a single or high-quality output). These results help to reconcile mixed findings and illustrate when friendship groups are more likely to perform better than acquaintance groups.

Original languageEnglish
Pages (from-to)63-79
Number of pages17
JournalPersonality and Social Psychology Bulletin
Issue number1
Publication statusPublished - 1 Jan 2018
Externally publishedYes


  • friendship
  • group performance
  • meta-analysis
  • relationships

ASJC Scopus subject areas

  • Social Psychology

Cite this