The intentionality bias in schizotypy: A social matter

Roodenrys, Steven, Barkus, Emma, Woolrych, Tracey, Miller, Leonie and Favelle, Simone (2021) The intentionality bias in schizotypy: A social matter. Cognitive Neuropsychiatry, 26 (1). pp. 55-72. ISSN 1354-6805

intentionality_bias_Roodenrys_et_al_accepted.pdf - Accepted Version

Download (333kB) | Preview
Official URL:


Introduction: We aimed to investigate the association between schizotypy and intentionality bias, the tendency to interpret ambiguous actions as being intentional, for social and non-social actions separately. This bias contributes to interpersonal difficulties, and has been associated with psychotic symptoms, such as delusions. However, results have been inconsistent for an association between putative psychosis proneness, schizotypy, and intentionality bias. Further, the multidimensional nature of schizotypy has not been considered. Agreeableness was measured to examine the specificity of the relationship, and inhibition to examine its potential role as a mediator.
Methods: Two online studies are reported (n = 280 and n = 163) in which participants made intentionality judgements about ambiguous actions described in sentences. They also completed questionnaire measures of schizotypy and agreeableness, and inhibitory efficiency (a sentence completion task).
Results: Schizotypy was associated with perceiving ambiguous actions as intentional, particularly in social contexts, after controlling for agreeableness. The association with social intentionality was stronger for schizotypy subscales capturing paranoia and unusual beliefs. Inhibitory efficiency as not a significant predictor of intentionality bias.
Conclusion: These finding suggest intentionality biases for social and non-social events are distinguishable. In relation to schizotypy, social situations appear to generate perceptions of intentionality. Intentionality bias represents a phenotypic cognitive risk for psychosis which should be further investigated.

Item Type: Article
Uncontrolled Keywords: schizotypy, intentionality bias
Subjects: C800 Psychology
Department: Faculties > Health and Life Sciences > Psychology
Depositing User: John Coen
Date Deposited: 05 Jan 2021 12:28
Last Modified: 06 Jan 2022 03:30

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics