ISSN 2043-8087
Journal of Experimental Psychopathology
 Volume 4, Issue 4, 360-367, 2013
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Paranoid Ideation and Assessments of Trust

Hannah Kirk(a), Andrea Gilmour(a), Robert Dudley(b),(c), Deborah M Riby(a)
(a) School of Psychology, Newcastle University, UK
(b) Institute of Neuroscience, Newcastle University, UK
(c) South of Tyne Early Intervention in Psychosis Service, Northumberland Tyne & Wear NHS Foundation Trust, UK

Volume 4, Issue 4, 2013, Pages 360-367

The ability to make accurate social judgements is crucial to effective functioning in society. Individuals suffering from paranoia are suspicious and mistrustful of others and consequently may have difficulties accurately assessing information about others within their environment. We investigated the effects of paranoid ideation on evaluations of trustworthiness from unfamiliar faces in a non-clinical sample. Measures of paranoid beliefs about others were used to assess 122 typically developing young adults. Individuals categorised with high paranoid ideation (n = 25) and low paranoid ideation (n = 23) subsequently rated unfamiliar faces that had previously been manipulated to look untrustworthy, of average trust, and trustworthy. Individuals high in paranoid ideation rated faces as significantly less trustworthy than those low in paranoid ideation. Both groups altered their ratings according to the trustworthiness of the face, but those high in paranoia rated all faces as less trustworthy. The findings suggest a bias in social judgements in individuals with high levels of paranoid ideation. They are able to judge faces for trustworthiness but have a bias towards a lower estimation of trust.

Table of Contents
Materials and Procedure

Correspondence to
Dr. Robert Dudley, School of Psychology, Newcastle University, Ridley Building 1, Framlington Place, Newcastle upon Tyne, NE1 7RU.

Paranoia, trust, face perception

Received 13 Mar 2012; Revised 21 Feb 2013; Accepted 8 Mar 2013; In Press 21 Jul 2013

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