Conceptualizing the Influence of Social Agents of Behavior Change: A Meta-Analysis of the Effectiveness of HIV-Prevention Interventionists for Different Groups
Psychological Bulletin (2006) - Comment
pubmed: 16536642  doi: 10.1037/0033-2909.132.2.212  issn: 1939-1455  issn: 0033-2909 

Marta R. Durantini, Dolores Albarracín, Amy L. Mitchell, Allison N. Earl, Jeffrey C. Gillette