Fear among the extremes: how political ideology predicts negative emotions and outgroup derogation
Personality and Social Psychology Bulletin (2015) - Comment
pubmed: 25652084  doi: 10.1177/0146167215569706  issn: 1552-7433  issn: 0146-1672 

Jan-Willem Van Prooijen, André P. M. Krouwel, Max Boiten, Lennart Eendebak