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Evaluation of psychodynamic therapy. effectiveness. Copy: few empirical studies compared to other treatments
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effectiveness • Copy: few empirical studies compared to other treatments • Eysenck- reviewed 2 studies, incorporating waiting list controls, which showed that 66% of the control group improved spontaneously, compared to only 44% of the psychoanalysis patients- > concluding that psychoanalysis did not work!! • Bergin- reviewed the original data and found that the control groups were actually receiving some form of treatment- 1 of the control groups was hospitalized and the others were being treated by their GP. • He also found that selecting different outcome criteria, improvement in the psychoanalysis group rose to 83% and the control dropped to 30%.
More recent research • Driessen et al (2013) compared the efficacy of psychodynamic therapy with that of CBT. • 341 adults who met the DSM-IV criteria for a major depression were randomly assigned to 16 sessions of CBT of short-term psychodynamic supportive therapy as outpatients. • Severely depressed patients also received antidepressant medication. • No statistically significant treatment differences were found after one year, although the average post-treatment remission rate was 22.7%. • Driessen concluded that 16 weeks is not enough to treat many patients, but that the findings extend the evidence base of psychodynamic therapy for depression.
What does this tell us about psychodynamic therapies for depression? • Why may the findings of this study be considered internally valid?