Belief in the malleability of groups strengthens the tenuous link between a collective apology and intergroup forgiveness
Personality and Social Psychology Bulletin (2015) - Comment
pubmed: 25767157  doi: 10.1177/0146167215576721  issn: 1552-7433  issn: 0146-1672 

Michael J. A. Wohl, Smadar Cohen-Chen, Eran Halperin, Julie Caouette, Nicole Hayes, Matthew J. Hornsey