Wieder, Lillian; Brown, Richard; Thompson, Trevor and Terhune, Devin Blair. 2022. Hypnotic suggestibility in dissociative and related disorders: A meta-analysis. Neuroscience & Biobehavioral Reviews, 139, 104751. ISSN 0149-7634 [Article]

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Abstract or Description

Elevated responsiveness to verbal suggestions is hypothesized to represent a predisposing factor for the dissociative disorders (DDs) and related conditions. However, the magnitude of this effect has not been estimated in these populations nor has the potential moderating influence of methodological limitations on effect size variability across studies. This study assessed whether patients with DDs, trauma- and stressor-related disorders (TSDs), and functional neurological disorder (FND) display elevated hypnotic suggestibility. A systematic literature search identified 20 datasets. A random-effects meta-analysis revealed that patients displayed greater hypnotic suggestibility than controls, Hedges’s g = 0.92 [0.66, 1.18]. This effect was observed in all subgroups but was most pronounced in the DDs. Although there was some evidence for publication bias, a bias-corrected estimate of the group effect remained significant, g = 0.57 [0.30, 0.85]. Moderation analyses did not yield evidence for a link between effect sizes and methodological limitations. These results demonstrate that DDs and related conditions are characterized by elevated hypnotic suggestibility and have implications for the mechanisms, risk factors, and treatment of dissociative psychopathology.

Item Type:	Article
Identification Number (DOI):	https://doi.org/10.1016/j.neubiorev.2022.104751
Additional Information:	Data Availability: The data comprise a meta-analysis and are freely available from the original papers.
Keywords:	Dissociation, Hypnotizability, Post-traumatic stress disorder, Suggestion, Trauma
Departments, Centres and Research Units:	Psychology
Dates:	Date Event 22 June 2022 Accepted 6 July 2022 Published Online August 2022 Published
Item ID:	31998
Date Deposited:	11 Jul 2022 09:20
Last Modified:	19 Jul 2022 09:27
Peer Reviewed:	Yes, this version has been peer-reviewed.
URI:	https://research.gold.ac.uk/id/eprint/31998

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