OBJECTIVE Recent studies have suggested that cannabis use is a risk factor for developing schizophrenia. We tested the hypothesis that cannabis use increases the likelihood of psychosis-like experiences in non-clinical participants who scored highly on a measure of schizotypy. METHOD The psychological effects of cannabis were assessed in 137 healthy individuals (76% female, mean age 22 years)...

We replicate relations between factors of schizotypy and cognitive asymmetry patterns assessed with recognition memory for words versus faces, and with arousal levels assessed with self-report scales. The withdrawn factor or subscales of loneliness and constricted affect were associated as before with a right hemisphere, face advantage asymmetry, as was physical anhedonia in males. Subjects wit...

Two human associative-learning experiments investigated the relationship between the negative dimension of schizotypy and selective and nonselective prediction-error learning. Experiment 1 demonstrates that individuals low, but not high, on the introvertive anhedonia dimension of schizotypy demonstrate Kamin blocking, which has been taken to reflect the operation of selective learning (Rescorla...

Previous single studies have found inconsistent results on sex differences in positive schizotypy, women scoring mainly higher than men, whereas in negative schizotypy studies have often found that men score higher than women. However, information on the overall effect is unknown. In this study, meta-analytic methods were used to estimate sex differences in Wisconsin Schizotypy Scales developed...

INTRODUCTION Previous studies of the relation between theory of mind (ToM) and schizotypy have suggested that ToM deficits may be associated with positive signs (e.g., hallucination- and delusion-like experiences). Good theoretical reasons exist to suggest that this relation may be largely due to ToM deficits being predominantly associated with the occurrence of persecutory delusion-like belief...

OBJECTIVE In the present study the relationship between behavioural adjustment following cognitive conflict and schizotypy was investigated using a Stroop colour naming paradigm. Previous research has found deficits with behavioural adjustment in schizophrenia patients. Based on these findings, we hypothesized that individual differences in schizotypy, a personality trait reflecting the subclin...

Personality traits such as neuroticism are associated with schizophrenia and schizotypy. However, studies thus far have not clarified the differential association of neuroticism with individual schizotypy dimensions and the role it plays in the expression of schizophreniaspectrum psychopathology. 204 nonclinically ascertained participants completed self-report questionnaires assessing neurotici...

Schizotypy refers to the personality trait of experiencing "psychotic" symptoms and can be regarded as a predisposition of schizophrenia-spectrum psychopathology (Raine, 1991). Cumulative evidence has revealed that individuals with schizotypy, as well as schizophrenia patients, have emotional processing deficits. In the present study, we investigated multimodal emotion perception in schizotypy ...