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Clinicians commonly administer long-term psychodynamic psychotherapy, despite limited evidence on its effectiveness. To address the lack of evidence, researchers conducted a 3-year, randomized trial comparing the effects of long-term psychodynamic, short-term psychodynamic, and short-term solution-focused therapies.
Participants were 326 outpatients (age range, 20–45) with a DSM-IV mood disorder (85%) and/or anxiety disorder (44%). Long-term psychodynamic psychotherapy (LPP) involved two or three weekly sessions for 3 years. Short-term psychodynamic psychotherapy involved 20 weekly sessions over 5 to 6 months. Solution-focused therapy involved up to 12 sessions over 8 months. All patients had been symptomatic for more than a year, had functi…