Effectiveness and mechanisms of Intensive Short-Term Dynamic Psychotherapy for treatment-resistant depression: a reanalysis of a randomized controlled trial
Peter Lilliengren
IntroductionIntensive Short-Term Dynamic Psychotherapy has shown promising effects for treatment-resistant depression, but it remains unclear whether its hypothesized mechanisms — reducing emotional repression, negative affect, and psychological distress — actually mediate treatment outcomes.MethodsWe reanalyzed publicly available data from a randomized controlled trial (N = 86) comparing 20 sessions of Intensive Short-Term Dynamic Psychotherapy to waitlist control for treatment-resistant depres