University of Hertfordshire

Delusion-prone individuals : stuck in their ways?

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Delusion-prone individuals : stuck in their ways? / Laws, K.R.; Kondel, Tejinder; Clarke, R.; Nillo, A-M.

In: Psychiatry Research, Vol. 186, No. 2-3, 2011, p. 219-224.

Research output: Contribution to journalArticle

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Laws, K.R. ; Kondel, Tejinder ; Clarke, R. ; Nillo, A-M. / Delusion-prone individuals : stuck in their ways?. In: Psychiatry Research. 2011 ; Vol. 186, No. 2-3. pp. 219-224.

Bibtex

@article{7945af3a7f0842fea40b1f16f6f38840,
title = "Delusion-prone individuals : stuck in their ways?",
abstract = "Although false memories and confabulation have been linked to both executive dysfunction and greater suggestibility, similar associations with the emergence of delusional thinking remain unexamined. We therefore compared healthy individuals who scored high and low on the Peters Delusional Inventory (PDI: Peters et al., 1999) on measures of set-shifting (the intra–extradimensional set shift task: IED) planning (the Stockings of Cambridge Task: SOC). Additionally, we examined whether high delusion-prone individuals show greater suggestibility on the Gudjonsson Suggestibility Scale (GSS 2: Gudjonsson, 1987). On the IED task, the high group made more pre-extradimensional shift errors than the low PDI group, and this was especially notable for reversal learning. By contrast, no differences emerged on any aspect of the SOC. Finally, and intriguingly, the high PDI group was less likely than the low PDI group to change their responses after receiving suggestive negative feedback. We propose that delusional-style thinking may be underpinned by an orbitofrontal-based reversal learning difficulty affecting the flexibility to adapt responses to changing contingencies and external pressure.",
keywords = "delusions, PDI-21, executive function, suggestibility, confabulation, orbitofrontal cortex",
author = "K.R. Laws and Tejinder Kondel and R. Clarke and A-M. Nillo",
note = "Original article can be found at: http://www.sciencedirect.com/ Copyright Elsevier",
year = "2011",
doi = "10.1016/j.psychres.2010.09.018",
language = "English",
volume = "186",
pages = "219--224",
journal = "Psychiatry Research",
issn = "0165-1781",
publisher = "Elsevier Ireland Ltd",
number = "2-3",

}

RIS

TY - JOUR

T1 - Delusion-prone individuals : stuck in their ways?

AU - Laws, K.R.

AU - Kondel, Tejinder

AU - Clarke, R.

AU - Nillo, A-M.

N1 - Original article can be found at: http://www.sciencedirect.com/ Copyright Elsevier

PY - 2011

Y1 - 2011

N2 - Although false memories and confabulation have been linked to both executive dysfunction and greater suggestibility, similar associations with the emergence of delusional thinking remain unexamined. We therefore compared healthy individuals who scored high and low on the Peters Delusional Inventory (PDI: Peters et al., 1999) on measures of set-shifting (the intra–extradimensional set shift task: IED) planning (the Stockings of Cambridge Task: SOC). Additionally, we examined whether high delusion-prone individuals show greater suggestibility on the Gudjonsson Suggestibility Scale (GSS 2: Gudjonsson, 1987). On the IED task, the high group made more pre-extradimensional shift errors than the low PDI group, and this was especially notable for reversal learning. By contrast, no differences emerged on any aspect of the SOC. Finally, and intriguingly, the high PDI group was less likely than the low PDI group to change their responses after receiving suggestive negative feedback. We propose that delusional-style thinking may be underpinned by an orbitofrontal-based reversal learning difficulty affecting the flexibility to adapt responses to changing contingencies and external pressure.

AB - Although false memories and confabulation have been linked to both executive dysfunction and greater suggestibility, similar associations with the emergence of delusional thinking remain unexamined. We therefore compared healthy individuals who scored high and low on the Peters Delusional Inventory (PDI: Peters et al., 1999) on measures of set-shifting (the intra–extradimensional set shift task: IED) planning (the Stockings of Cambridge Task: SOC). Additionally, we examined whether high delusion-prone individuals show greater suggestibility on the Gudjonsson Suggestibility Scale (GSS 2: Gudjonsson, 1987). On the IED task, the high group made more pre-extradimensional shift errors than the low PDI group, and this was especially notable for reversal learning. By contrast, no differences emerged on any aspect of the SOC. Finally, and intriguingly, the high PDI group was less likely than the low PDI group to change their responses after receiving suggestive negative feedback. We propose that delusional-style thinking may be underpinned by an orbitofrontal-based reversal learning difficulty affecting the flexibility to adapt responses to changing contingencies and external pressure.

KW - delusions

KW - PDI-21

KW - executive function

KW - suggestibility

KW - confabulation

KW - orbitofrontal cortex

U2 - 10.1016/j.psychres.2010.09.018

DO - 10.1016/j.psychres.2010.09.018

M3 - Article

VL - 186

SP - 219

EP - 224

JO - Psychiatry Research

JF - Psychiatry Research

SN - 0165-1781

IS - 2-3

ER -