Motivational interviewing: a pilot test of active ingredients and mechanisms of change
Psychology of Addictive Behaviors (2012) - Comment
pubmed: 22905896  doi: 10.1037/a0029674  issn: 1939-1501  issn: 0893-164x 

Jon Morgenstern, Alexis Kuerbis, Paul Amrhein, Lisa Hail, Kevin Lynch, James R. McKay