We find the following quote on the Psychology Today web site;
Perhaps it’s time psychologists start asking some of those same questions. What is exorcism? How does it heal? Can we learn something valuable about psychotherapy from exorcism? Are there certain techniques employed by exorcists that psychotherapists should consider when treating angry, psychotic or violent patients? Are there vital existential or spiritual questions addressed by exorcism–for example, the archetypal riddle of evil–that psychotherapy detrimentally avoids or neglects?
To read the entire article, see: http://www.psychologytoday.com/blog/evil-deeds/201201/the-devil-inside-psychotherapy-exorcism-and-demonic-possession