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Interpretation Bias in Paranoia: A Systematic Review and Meta-Analysis

Trotta, Antonella and Kang, Jungwoo and Stahl, Daniel and Yiend, Jenny (2021) 'Interpretation Bias in Paranoia: A Systematic Review and Meta-Analysis.' Clinical Psychological Science, 9 (1). pp. 3-23. ISSN 2167-7034

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More than 10% of the general population regularly experience paranoid thoughts. Persecutory delusions occur in one third of psychiatric patients in the United Kingdom and are associated with severe clinical and social impairment. Furthermore, individuals with elevated vulnerability to paranoia interpret ambiguous environmental information more negatively than those with low vulnerability, a cognitive phenomenon called interpretation bias. We conducted a systematic review and meta-analysis of the association between interpretation bias and paranoia. Twenty studies were included, and our meta-analysis indicated that a negative interpretation bias was associated with paranoia both in clinical (standardized mean difference, or SMD = 1.01; 95% confidence interval [CI] = [0.51, 1.52], p < .001) and nonclinical populations (SMD = 1.06; 95% CI = [0.28, 1.85], p = .008). Our results also showed that higher negative interpretation bias was positively correlated with the severity of paranoia, and results were consistent in nonclinical (r = .32; 95% CI = [.21, .43], p < .001) and clinical samples (r = .38; 95% CI = [.27, .48], p < .001). These findings might orient prevention strategies and psychological interventions for paranoia.

Item Type: Article
Uncontrolled Keywords: psychosis; cognition; interpretation bias; paranoia; systematic review; meta-analysis
Divisions: Faculty of Science and Health
Faculty of Science and Health > Health and Social Care, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 24 Feb 2022 21:19
Last Modified: 18 Aug 2022 12:33

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