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PRINTED FROM the OXFORD RESEARCH ENCYCLOPEDIA, PSYCHOLOGY (psychology.oxfordre.com). (c) Oxford University Press USA, 2016. All Rights Reserved. Personal use only; commercial use is strictly prohibited. Please see applicable Privacy Policy and Legal Notice (for details see Privacy Policy and Legal Notice).

date: 15 October 2018

Summary and Keywords

Although psychotherapy is on balance effective for a broad array of psychological problems, a relatively small but steadily accumulating body of evidence suggests that at least some psychological interventions are harmful. Until recently, however, relatively little research attention has been paid to the identification of harmful psychological treatments. Although it has long been recognized that a nontrivial minority of people become worse following therapy, this finding does not necessarily mean that they have become worse because of therapy. Nevertheless, recent research has homed in on a small subset of interventions that may produce psychological harm, physical harm, or both. In addition, there is growing interest in pinpointing potential mechanisms of deterioration effects in psychotherapy, as well as in distinguishing harmful therapies from harmful therapists.

Keywords: Psychotherapy, effectiveness of therapy, iatrogenic, deterioration, randomized controlled trial, recovered memories, dissociative identity disorder

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