The Evidence Base
Contrary to a common misconception, psychoanalytic psychotherapy is supported by a substantial and growing body of scientific research. Decades of randomized controlled trials, meta-analyses, and long-term outcome studies consistently demonstrate its effectiveness across a wide range of mental health conditions.
The research shows not only that psychoanalytic treatments work, but that their benefits are often more durable than shorter-term approaches — with patients continuing to improve after treatment ends, suggesting that the therapy fosters lasting psychological growth rather than only symptom relief.
"Effect sizes for psychodynamic psychotherapies are as large as those reported for other treatments, including treatments that have been actively promoted as evidence-based." — Jonathan Shedler, PhD (2010)
What the Research Shows
1.8×
Effect Size
Long-term psychodynamic therapy produced substantially larger effect sizes than shorter interventions for complex disorders (Leichsenring & Rabung, JAMA).
96%
Better Outcomes
Patients receiving long-term psychodynamic therapy fared better than 96% of comparison groups for complex mental disorders.
78%
Utilization Reduction
77.8% of studies reported healthcare utilization reductions after short-term psychodynamic psychotherapy for somatic conditions (Abbass et al., 2020).
World Psychiatry
High-quality evidence that psychodynamic therapy outperforms inactive controls for depression and somatic disorders, with outcomes equivalent to CBT. One of the most comprehensive assessments of the psychodynamic evidence base to date.
Journal of Affective Disorders
Short-term psychodynamic psychotherapy (STPP) demonstrated significant superiority over no interventions for depressive symptoms, with an effect size of -0.91 — in the large range by conventional standards.
Frontiers in Psychology
Analysis of 22 studies found STPP significantly effective when compared to controls (Hedges' g = -1.24), with sustained benefits at follow-up (g = -0.75). Particularly effective for borderline personality disorder, with meaningful reductions in suicidal episodes.
JAMA
Meta-analysis of 23 studies revealed long-term psychodynamic therapy produced substantially larger effect sizes (1.8) than shorter interventions for complex disorders. Patients fared better than 96% of comparison groups — a landmark finding for longer-term treatment.
Psychotherapy and Psychosomatics
Analysis of 17 randomized controlled trials showed STPP significantly outperformed minimal treatment controls for somatic symptoms, with 77.8% of studies reporting reductions in overall healthcare utilization — a particularly meaningful finding for cost-effectiveness.
Clinical Applications
Depression — including treatment-resistant and chronic forms
Anxiety disorders
Borderline and other personality disorders
PTSD and trauma-related conditions
Eating disorders
Somatic symptom disorders
Suicidality and chronic self-harm
Complex and comorbid mental disorders
American Psychoanalytic Association
The American Psychoanalytic Association offers a broad range of publications, journals, and podcasts exploring psychoanalytic theory, research, and clinical practice — a valuable resource for patients, practitioners, and the curious alike.
Publications and PodcastsResearch summaries are provided for informational and educational purposes only and do not constitute medical advice. Individual outcomes vary. Always consult a qualified healthcare provider regarding your specific situation. See the Disclaimer for full details.
Related
7 landmark peer-reviewed studies and commentaries on the evidence base for psychodynamic therapy.
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