Promoting early adolescents' achievement and peer relationships: the effects of cooperative, competitive, and individualistic goal structures

Psychological Bulletin (2008) - Comment
pubmed: 18298270 doi: 10.1037/0033-2909.134.2.223 issn: 0033-2909 issn: 1939-1455

Cary J. Roseth, David W. Johnson, Roger T. Johnson