A Series of Meta-Analytic Tests of the Efficacy of Long-Term Psychoanalytic Psychotherapy

• DOI: 10.31234/osf.io/d2a3s
• Publication Date: 2018-07-02T11:41:08Z
• Authors: Christian Franz J...; Felix D. Schönbrodt
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Recent meta-analyses come to conflicting conclusions about the efficacy of long-term psychoanalytic psychotherapy (LTPP). Our first goal was reproduce most recent meta-analysis by Leichsenring, Abbass, Luyten, Hilsenroth, and Rabung (2013) who found evidence for LTPP in treatment complex mental disorders. replicated effect sizes were general slightly smaller. Second, we conducted an updated randomized controlled trials comparing (lasting at least one year 40 sessions) other forms We focused on a transparent research process according open science standards applied series elaborated meta-analytic procedures test control publication bias. comprising 191 from 14 eligible studies revealed small, statistically significant post-treatment outcome domains psychiatric symptoms, target problems, social functioning, overall effectiveness (Hedges’ g ranging between 0.24 0.35). The size domain personality functioning (0.24) not (p = .08). No signs bias could be detected. In light heterogeneous study set some methodological shortcomings primary studies, these results should interpreted cautiously. conclusion, might superior Notably, our represent additional gain vs. primarily psychotherapy. this case, large differences are expected.