Insight and Outcome in Long-Term Psychotherapies of Depression.

Objectives: In different therapeutic approaches, insight is acknowledged as an important part of patient's therapeutic change process. We examined whether the level of insight (1) differs between psychoanalytic (PA), psychodynamic (PD) and cognitive-behavioral therapy (CBT), and (2) predicts long-term symptomatic outcome. Methods: A completer sample of 67 depressed patients from the Munich Psychotherapy Study was analyzed. Symptoms were assessed with Beck Depression Inventory (BDI) and Symptom Checklist-Revised (SCL-90-R) at pre-treatment and three-year follow-up. Insight was assessed from 242 sessions of mid-therapy phase with the Experiencing Scale. Results: The general level of insight was higher in PA as compared to CBT, and associated with lower depressive symptoms (BDI) across all three therapeutic modalities at three-year follow-up. Insight was unrelated to general distress (SCL-90-R). Exploratory analyses suggested that patients treated with PA showed higher levels of insight especially in high quality sessions (assessed by therapist). Patients for whom the extent of insight was positively linked to session quality, suffered from more depressive symptoms at three-year follow-up than patients gaining insight when session quality was low. Conclusion: Insight differs between PA and CBT and may be a common change mechanism in long-term psychotherapies.