Dysfunctional Beliefs and Their Psychological Pathways to Negative Symptoms and Functioning in Schizophrenia Spectrum...

The cognitive model conceptualizes negative symptoms within a theoretical framework highlighting dysfunctional beliefs as maintenance factors. Although several beliefs have been proposed as potential mechanistic targets for psychosocial interventions, no study has comprehensively examined their relationships with negative symptoms and functional outcomes. This study aimed to evaluate the pathways from each of the 6 primary dysfunctional beliefs posited by the cognitive model to negative symptoms and functioning.

The sample consisted of 132 participants with schizophrenia spectrum disorders. The direct and indirect pathways from dysfunctional beliefs to negative symptoms and functioning, respectively, were examined using 2 approaches. A principal components analysis of the 6 beliefs produced a single factor used for path modeling. Separate models were then estimated for each belief to evaluate their unique contributions. Model specificity was assessed by comparing effects for overall negative symptoms versus the diminished motivation subdomain.

Both approaches revealed a consistent pattern, with dysfunctional beliefs showing significant direct effects on negative symptoms and indirect effects on functioning via negative symptoms. Significant individual paths were observed for defeatist performance beliefs, asocial beliefs, low expectancies for success, low expectancies for pleasure, and perceptions of limited resources, but not for internalized stigma. Models focused on diminished motivation demonstrated superior fit.

Findings support the cognitive model as a viable framework for informing cognitive-behavioral interventions for negative symptoms. By identifying consistent relationships with motivation and functioning, the results highlight the potential clinical utility of targeting specific dysfunctional beliefs to alleviate negative symptoms and enhance treatment outcomes.