Downloads: 620

Files in This Item:
File Description SizeFormat 
scan.nsy050.pdf431.78 kBAdobe PDFView/Open
Title: Reduced engagement of the anterior cingulate cortex in the dishonest decision-making of incarcerated psychopaths
Authors: Abe, Nobuhito  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-9897-4414 (unconfirmed)
Greene, Joshua D
Kiehl, Kent A
Author's alias: 阿部, 修士
Keywords: anterior cingulate cortex
cognitive conflict
deception
dishonesty
honesty
psychopathy
Issue Date: 5-Sep-2018
Publisher: Oxford University Press (OUP)
Journal title: Social Cognitive and Affective Neuroscience
Volume: 13
Issue: 8
Start page: 797
End page: 807
Abstract: A large body of research indicates that psychopathic individuals lie chronically and show little remorse or anxiety. Yet, little is known about the neurobiological substrates of dishonesty in psychopathy. In a sample of incarcerated individuals (N = 67), we tested the hypothesis that psychopathic individuals show reduced activity in the anterior cingulate cortex (ACC) when confronted with an opportunity for dishonest gain, reflecting dishonest behavior that is relatively unhindered by response conflict. During functional magnetic resonance imaging (fMRI), incarcerated offenders with different levels of psychopathy performed an incentivized prediction task wherein they were given real and repeated opportunities for dishonest gain. We found that while incarcerated offenders showed a high rate of cheating, levels of psychopathic traits did not influence the frequency of dishonesty. Higher psychopathy scores predicted decreased activity in the ACC during dishonest decision-making. Further analysis revealed that the ACC was functionally connected to the dorsolateral prefrontal cortex (DLPFC), and that ACC activity mediated the relationship between psychopathic traits and reduced reaction times (RTs) for dishonest behavior. These findings suggest that psychopathic individuals behave dishonestly with relatively low levels of response conflict and that the ACC may play a critical role in this pattern of behavior.
Description: サイコパスがためらいなく嘘をつく脳のメカニズムを明らかにしました. 京都大学プレスリリース. 2018-07-19.
Rights: © The Author(s) (2018). Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
URI: http://hdl.handle.net/2433/232686
DOI(Published Version): 10.1093/scan/nsy050
PubMed ID: 29982639
Related Link: https://www.kyoto-u.ac.jp/ja/research-news/2018-07-19-0
Appears in Collections:Journal Articles

Show full item record

Export to RefWorks


Export Format: 


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.