Why does choice enhance treatment effectiveness? Using placebo treatments to demonstrate the role of personal control
Journal of Personality and Social Psychology (2013) - Comment
pubmed: 23915042  doi: 10.1037/a0034005  issn: 1939-1315  issn: 0022-3514 

Andrew L. Geers, Jason P. Rose, Stephanie L. Fowler, Heather M. Rasinski, Jill A. Brown, Suzanne G. Helfer