Metacognitive training for patients with schizophrenia: preliminary evidence for a targeted, single-module programme

Area of Science:

• Psychiatry and Psychology
• Cognitive Behavioral Therapy
• Neuroscience

Background:

• Metacognitive training (MCT) is an established group-based program for schizophrenia targeting cognitive biases.
• Problematic thinking styles, or cognitive biases, are implicated in the development and maintenance of delusions in schizophrenia.
• A hypersalience of evidence-hypothesis matches is a proposed mechanism driving biases like jumping to conclusions and belief inflexibility.

Purpose of the Study:

• To investigate the efficacy of a shorter, single-module, individually administered MCT program.
• To target specific cognitive biases associated with "hypersalience of evidence-hypothesis matches".
• To assess improvements in cognitive bias tasks, delusional ideation, insight, and quality of life.

Main Methods:

• A sample of 28 schizophrenia patients with mild delusions were recruited.
• Participants were randomized into either a single-session targeted MCT program (n=14) or treatment as usual (n=14).
• Clinical measures of positive symptoms, delusions, insight, quality of life, and cognitive bias tasks were administered pre- and post-treatment.

Main Results:

• Targeted MCT significantly reduced delusional severity and conviction compared to controls.
• Patients receiving targeted MCT showed significant improvements in clinical insight and performance on cognitive bias tasks.
• Improvements in cognitive bias tasks correlated with reductions in positive symptomology; patients reported positive feedback.

Conclusions:

• A shorter, targeted MCT program shows promise in reducing delusions and improving cognitive biases in schizophrenia.
• The findings suggest that focused interventions can be effective, warranting further investigation.
• Limitations include a small sample size and lack of optimal randomization, necessitating larger trials.