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16 Feb 1952 Jahr - A study on psychotherapy efficacy was published by Hans Eysenck suggesting that therapy is no more effective that no treatment at all. This prompted an onslaught of outcome studies which have since shown psychotherapy to be an effective treatment for mental illness

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History of psychology

ByAsha
11 Dez 2017
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16 Feb 1952 Jahr
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~ 73 years ago
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