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A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits

Nicola Gray Orcid Logo, Aimee McKinnon, Robert J. Snowden Orcid Logo

Physiological Reports, Volume: 10, Issue: 6

Swansea University Authors: Nicola Gray Orcid Logo, Aimee McKinnon

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DOI (Published version): 10.14814/phy2.15235

Abstract

The pupil of the eye dilates in response to affective information, even if that information is not visual. We used this affective modulation of the pupil to examine the hypothesis that individuals with high traits of psychopathy have an insensitivity to emotional stimuli. We also examined general pe...

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Published in: Physiological Reports
ISSN: 2051-817X 2051-817X
Published: Wiley 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa59628
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spelling 2022-03-23T15:02:55.5892663 v2 59628 2022-03-15 A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits d3dfb6fa4b6e057dd587f5e9f28a581f 0000-0003-3849-8118 Nicola Gray Nicola Gray true false 6c98a4d9f16a224819aae292acd981c4 Aimee McKinnon Aimee McKinnon true false 2022-03-15 HPS The pupil of the eye dilates in response to affective information, even if that information is not visual. We used this affective modulation of the pupil to examine the hypothesis that individuals with high traits of psychopathy have an insensitivity to emotional stimuli. We also examined general personality traits related to psychopathy. A sample of 120 healthy young men had their pupils monitored while they listened to sound clips that conveyed either neutral emotion (e.g., rain), negative emotion (e.g., a person screaming) or positive emotion (e.g., people laughing). Psychopathy and general personality traits were measured via self-report questionnaire. As expected, both the positive and negative emotional sounds produced greater dilation in the pupil size than neutral sounds. This affective modulation of the pupil was found to be reduced for the negative sounds for people high on the “callous/affective” components of psychopathy (the Affective facet of the SRP-4 and the Meanness scale of the TriPM) and the general personality traits of Reward Dependence and Cooperativeness. The results indicate that these callous traits of psychopathy and general personality may be underpinned by a reduction in the ability to effectively process or monitor emotional stimuli. Journal Article Physiological Reports 10 6 Wiley 2051-817X 2051-817X Cloninger TCI, emotion, psychobiological model of personality, psychopathy, pupillometry, SRP- 4, triarchic model of psychopathy, TriPM 21 3 2022 2022-03-21 10.14814/phy2.15235 COLLEGE NANME Psychology COLLEGE CODE HPS Swansea University 2022-03-23T15:02:55.5892663 2022-03-15T19:37:23.2406993 Faculty of Medicine, Health and Life Sciences School of Health and Social Care - Public Health Nicola Gray 0000-0003-3849-8118 1 Aimee McKinnon 2 Robert J. Snowden 0000-0001-9900-480x 3 59628__22658__cc1321c460754259862c8ab731ac94f1.pdf 59628.pdf 2022-03-23T15:00:46.7602818 Output 944226 application/pdf Version of Record true © 2022 The Authors. This is an open access article under the terms of the Creative Commons Attribution License true eng http://creativecommons.org/licenses/by/4.0/
title A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits
spellingShingle A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits
Nicola Gray
Aimee McKinnon
title_short A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits
title_full A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits
title_fullStr A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits
title_full_unstemmed A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits
title_sort A reduction in the pupil’s response to affective sounds in psychopathy and related personality traits
author_id_str_mv d3dfb6fa4b6e057dd587f5e9f28a581f
6c98a4d9f16a224819aae292acd981c4
author_id_fullname_str_mv d3dfb6fa4b6e057dd587f5e9f28a581f_***_Nicola Gray
6c98a4d9f16a224819aae292acd981c4_***_Aimee McKinnon
author Nicola Gray
Aimee McKinnon
author2 Nicola Gray
Aimee McKinnon
Robert J. Snowden
format Journal article
container_title Physiological Reports
container_volume 10
container_issue 6
publishDate 2022
institution Swansea University
issn 2051-817X
2051-817X
doi_str_mv 10.14814/phy2.15235
publisher Wiley
college_str Faculty of Medicine, Health and Life Sciences
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hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str School of Health and Social Care - Public Health{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}School of Health and Social Care - Public Health
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description The pupil of the eye dilates in response to affective information, even if that information is not visual. We used this affective modulation of the pupil to examine the hypothesis that individuals with high traits of psychopathy have an insensitivity to emotional stimuli. We also examined general personality traits related to psychopathy. A sample of 120 healthy young men had their pupils monitored while they listened to sound clips that conveyed either neutral emotion (e.g., rain), negative emotion (e.g., a person screaming) or positive emotion (e.g., people laughing). Psychopathy and general personality traits were measured via self-report questionnaire. As expected, both the positive and negative emotional sounds produced greater dilation in the pupil size than neutral sounds. This affective modulation of the pupil was found to be reduced for the negative sounds for people high on the “callous/affective” components of psychopathy (the Affective facet of the SRP-4 and the Meanness scale of the TriPM) and the general personality traits of Reward Dependence and Cooperativeness. The results indicate that these callous traits of psychopathy and general personality may be underpinned by a reduction in the ability to effectively process or monitor emotional stimuli.
published_date 2022-03-21T04:17:05Z
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