I'd really recommend the link another poster gave: http://www.apa.org/about/policy/resolution-psychotherapy.aspx http://www.apa.org/about/policy/resolution-psyc

I'd really recommend the link another poster gave: http://www.apa.org/about/policy/resolution-psychotherapy.aspx http://www.apa.org/about/policy/resolution-psychotherapy.asp... There's a lot of studies listed there, including a bunch of RCTs, mostly comparing different types of therapy. I couldn't find any attempting to use a "placebo" therapy, but I only really skimmed it. Does that help?