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Introduction.A preliminary cognitive model of grandiose delusions has been put forward suggesting that persecutory and grandiose delusions shared distinct, yet overlapping psychological processes. This study aims to test this model and hypothesises that participants experiencing grandiose delusions may demonstrate a theory of mind (ToM) impairment and differences in attributional style compared to a control group. Methods.A cross-sectional design compared the performance of 18 individuals with grandiose delusions to a control group of 14 participants with depression. ToM was measured using a non-verbal joke appreciation task and a verbal stories task. Attributional style was measured using the internal, personal and situational attributions questionnaire. Results.Participants experiencing grandiose delusions performed significantly worse on both ToM tasks compared to controls. Furthermore, these participants provided significantly more atypical answers when explaining the joke behind the ToM cartoons. No differences for subjective funniness ratings or attributional style were found. Conclusions.This preliminary study indicated participants experiencing grandiose delusions have ToM impairments which may contribute to the maintenance of this symptom. [ABSTRACT FROM PUBLISHER]

Introduction. Specific attributional styles have been demonstrated in individuals with psychotic disorders and are implicated in the development of psychotic symptoms. We aimed to examine the association between locus of control (LOC) assessed in childhood and psychotic symptoms reported in early adolescence. Methods. We used a prospective longitudinal design using data from a large birth cohort (the Avon Longitudinal Study of Parents and Children, ALPSAC). 6455 subjects completed a semistructured clinical interview assessing 12 individual psychotic symptoms at a mean age of 12.9 years. A measure of LOC was previously collected in the cohort at the age of 8. Results. Children who reported an externalised LOC at age 8 were at increased risk of reporting both broadly defined (OR 1.77, 95% CI 1.49 to 2.08) and narrowly defined (OR 2.06, 95% CI 1.58 to 2.67) psychotic symptoms at age 13 years. These associations were only slightly attenuated after adjustment for potential confounders. The associations were similar for broadly defined specific paranoid symptoms but weaker for narrowly defined specific paranoid symptoms. Conclusions. An externalised LOC appears to be associated with later reporting of psychotic symptoms in early adolescence. Further investigation of the role of attributional styles, such as LOC, in increasing the risk for psychotic disorders, is warranted. [ABSTRACT FROM AUTHOR]

Introduction. Although evidence suggests a discrepancy between the implicit and explicit attributional style (AS) in persons with persecutory delusions, this line of research has also produced conflicting findings. Thus, the aim of this study was to explain inconsistent results in implicit AS by introducing a modified assessment of implicit AS, which offered three attributional loci (internal, personal, and situational) instead of two (internal and external) as in previous studies and by investigating the associations between implicit AS, implicit self-esteem, explicit AS, and explicit self-esteem. Methods. Patients with acute persecutory delusions, patients with remitted persecutory delusions, and nonclinical controls were assessed in their implicit and explicit AS and implicit and explicit self-esteem. Results. Deluded patients presented an implicit “self-decreasing” AS compared to remitted patients and controls: They attributed negative events more towards themselves and positive events more towards situational factors, whereas their explicit self-serving AS was comparable to controls. Patients' implicit self-decreasing AS was associated with low implicit self-esteem. In addition, compared to remitted patients and controls, deluded patients presented low explicit and normal implicit self-esteem. Conclusions. The results shed light on the inconsistent findings in previous studies and indicate that persecutory delusions might be fed by implicit self-decreasing AS and an unstable self-esteem. [ABSTRACT FROM AUTHOR]