Laughlin, Patrick R.; Hatch, Erin C.; Silver, Jonathan S.; Boh, Lee (2006). "Groups Perform Better Than the Best Individuals on Letters-to-Numbers Problems: Effects of Group Size". Journal of Personality and Social Psychology. 90 (4): 644–651. doi:10.1037/0022-3514.90.4.644. ISSN0022-3514. PMID16649860.
Laughlin, Patrick R.; Hatch, Erin C.; Silver, Jonathan S.; Boh, Lee (2006). "Groups Perform Better Than the Best Individuals on Letters-to-Numbers Problems: Effects of Group Size". Journal of Personality and Social Psychology. 90 (4): 644–651. doi:10.1037/0022-3514.90.4.644. ISSN0022-3514. PMID16649860.
Laughlin, Patrick R.; Hatch, Erin C.; Silver, Jonathan S.; Boh, Lee (2006). "Groups Perform Better Than the Best Individuals on Letters-to-Numbers Problems: Effects of Group Size". Journal of Personality and Social Psychology. 90 (4): 644–651. doi:10.1037/0022-3514.90.4.644. ISSN0022-3514. PMID16649860.