• Human prejudice has ancient evolutionary roots http://www.sciencedaily.com/releases/2011/03/110317102552.htm 36 comments 19/3/2011 cogsci
• Yale researchers: Human prejudice has ancient evolutionary roots http://www.sciencedaily.com/releases/2011/03/110317102552.htm& 7 comments 8/5/2011 science
• Yale researchers: Human prejudice has ancient evolutionary roots (fixed link) http://opac.yale.edu/news/article.aspx?id=8345 47 comments 8/5/2011 science