BRAIN REWARD ACTIVITY TO MASKED IN-GROUP SMILING FACES PREDICTS FRIENDSHIP DEVELOPMENT
Social Psychological and Personality Science (2015) - Comment
pubmed: 26185595  doi: 10.1177/1948550614566093  issn: 1948-5506  issn: 1948-5514 

Pin-Hao A. Chen, Paul J. Whalen, Jonathan B. Freeman, James M. Taylor, Todd F. Heatherton