When does the in-group like the out-group? Bias among children as a function of group norms
Psychological Science (2015) - Comment
pubmed: 25888686  doi: 10.1177/0956797615572758  issn: 1467-9280  issn: 0956-7976 

Adam Rutland, Aline Hitti, Kelly Lynn Mulvey, Dominic Abrams, Melanie Killen