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Metacognitive therapy in post-traumatic stress disorder: A meta- analysis
Engin Buyukoksuz1, Gamze Giray2
1Istanbul Technical University, Psychological Counseling Center, Istanbul, Turkiye.
Dusunen Adam : Bakirkoy Ruh Ve Sinir Hastaliklari Hastanesi Yayin Organi
|July 16, 2026
Summary
Metacognitive Therapy (MCT) effectively reduces post-traumatic stress disorder (PTSD) symptoms. This meta-analysis of studies over two decades shows a large effect size, confirming MCT
Area of Science:
- Psychology
- Clinical Psychology
- Psychotherapy Research
Background:
- Post-traumatic stress disorder (PTSD) may stem from impaired emotional processing due to trauma-related thoughts and emotions.
- Metacognitive Therapy (MCT) is an emerging treatment for PTSD.
Purpose of the Study:
- To meta-analyze the clinical effectiveness of Metacognitive Therapy (MCT) for treating post-traumatic stress disorder (PTSD) over the past two decades.
- To assess the efficacy of MCT in reducing PTSD symptoms based on experimental studies.
Main Methods:
- Systematic search of multiple databases (ERIC, PubMed, Web of Science, etc.) for experimental studies from January 2000 to October 2022.
- Inclusion of seven studies with pre- and post-treatment measurements for PTSD patients treated with MCT.
- Analysis of effect size (Hedges' g), heterogeneity (Q statistic), and publication bias.
Main Results:
- A large effect size (Hedges' g=2.878) was found, indicating significant reduction in PTSD symptoms post-MCT.
- Heterogeneity was present, suggesting variability in treatment outcomes across studies.
- No evidence of publication bias was detected.
Conclusions:
- Metacognitive Therapy (MCT) demonstrates significant effectiveness in reducing PTSD symptoms.
- MCT may be a superior treatment option for post-traumatic stress disorder.
- Further research, including randomized controlled trials and cross-cultural studies with larger samples, is recommended.
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