Suggestibility and signal detection performance in hallucination-prone students



Alganami, Fatimah, Varese, Filippo, Wagstaff, Graham F and Bentall, Richard P
(2017) Suggestibility and signal detection performance in hallucination-prone students. COGNITIVE NEUROPSYCHIATRY, 22 (2). pp. 159-174.

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Abstract

<h4>Introduction</h4>Auditory hallucinations are associated with signal detection biases. We examine the extent to which suggestions influence performance on a signal detection task (SDT) in highly hallucination-prone and low hallucination-prone students. We also explore the relationship between trait suggestibility, dissociation and hallucination proneness.<h4>Method</h4>In two experiments, students completed on-line measures of hallucination proneness (the revised Launay-Slade Hallucination Scale; LSHS-R), trait suggestibility (Inventory of Suggestibility) and dissociation (Dissociative Experiences Scale-II). Students in the upper and lower tertiles of the LSHS-R performed an auditory SDT. Prior to the task, suggestions were made pertaining to the number of expected targets (Experiment 1, N = 60: high vs. low suggestions; Experiment 2, N = 62, no suggestion vs. high suggestion vs. no voice suggestion).<h4>Results</h4>Correlational and regression analyses indicated that trait suggestibility and dissociation predicted hallucination proneness. Highly hallucination-prone students showed a higher SDT bias in both studies. In Experiment 1, both bias scores were significantly affected by suggestions to the same degree. In Experiment 2, highly hallucination-prone students were more reactive to the high suggestion condition than the controls.<h4>Conclusion</h4>Suggestions may affect source-monitoring judgments, and this effect may be greater in those who have a predisposition towards hallucinatory experiences.

Item Type: Article
Uncontrolled Keywords: Hallucination proneness, source monitoring, signal detection, suggestibility, dissociation
Depositing User: Symplectic Admin
Date Deposited: 06 Feb 2020 16:57
Last Modified: 19 Jan 2023 00:04
DOI: 10.1080/13546805.2017.1294056
Open Access URL: https://www.research.manchester.ac.uk/portal/en/pu...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3073827