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A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating

Aimee Pink, Michelle Lee Orcid Logo, Menna Price Orcid Logo, Claire Williams Orcid Logo

Appetite, Volume: 133, Pages: 270 - 278

Swansea University Authors: Aimee Pink, Michelle Lee Orcid Logo, Menna Price Orcid Logo, Claire Williams Orcid Logo

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DOI (Published version): 10.1016/j.appet.2018.11.014

Abstract

Difficulty identifying and describing emotions (alexithymia) has been related to impulsiveness and negative affect, emotional eating and obesity. However, previous research findings concerning the relationship between alexithymia and obesity have been mixed and inconsistent, raising the possibility...

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Published in: Appetite
ISSN: 01956663
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa45961
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However, previous research findings concerning the relationship between alexithymia and obesity have been mixed and inconsistent, raising the possibility that the relationship is indirect and mediated by multiple unknown factors. The aim of the study was to comprehensively explore the potential pathways between alexithymia and obesity via a novel theoretical model, and for the first time, incorporate negative affect, impulsiveness and emotional eating as potential mediating factors. Two questionnaire-based studies were conducted; the first as an exploratory analysis within a student sample (N=125), and the second as a self-replication within a more representative general population sample (N=342). Study One revealed that difficulty identifying feelings predicted Body Mass Index (BMI) both directly (B = .1694, CI = .0194-.3194) and indirectly via impulsiveness and emotional eating (B = .0074, CI = .0001-.0315). In contrast, Study Two revealed that alexithymia predicted BMI indirectly via negative affect (when depression was included in the model; B = .0335, CI = .0019-.0660) or impulsiveness (when anxiety was included in the model; B = .0021, CI = .0001-.0066). Our findings provide partial support for the hypothesised model and offer original insight into the relationship between alexithymia and obesity. 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spelling 2020-10-22T14:25:01.6554512 v2 45961 2018-11-17 A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating b104bd4518ffc637bf9091ef85ff3a9b Aimee Pink Aimee Pink true false 503d8657d47c066ada31f344b030c352 0000-0002-1291-5895 Michelle Lee Michelle Lee true false e8d0f85a0d2762328c906c75b1d154b7 0000-0002-0025-0881 Menna Price Menna Price true false 21dc2ebf100cf324becc27e8db6fde8d 0000-0002-0791-744X Claire Williams Claire Williams true false 2018-11-17 FGMHL Difficulty identifying and describing emotions (alexithymia) has been related to impulsiveness and negative affect, emotional eating and obesity. However, previous research findings concerning the relationship between alexithymia and obesity have been mixed and inconsistent, raising the possibility that the relationship is indirect and mediated by multiple unknown factors. The aim of the study was to comprehensively explore the potential pathways between alexithymia and obesity via a novel theoretical model, and for the first time, incorporate negative affect, impulsiveness and emotional eating as potential mediating factors. Two questionnaire-based studies were conducted; the first as an exploratory analysis within a student sample (N=125), and the second as a self-replication within a more representative general population sample (N=342). Study One revealed that difficulty identifying feelings predicted Body Mass Index (BMI) both directly (B = .1694, CI = .0194-.3194) and indirectly via impulsiveness and emotional eating (B = .0074, CI = .0001-.0315). In contrast, Study Two revealed that alexithymia predicted BMI indirectly via negative affect (when depression was included in the model; B = .0335, CI = .0019-.0660) or impulsiveness (when anxiety was included in the model; B = .0021, CI = .0001-.0066). Our findings provide partial support for the hypothesised model and offer original insight into the relationship between alexithymia and obesity. Additionally, our findings highlight important methodological considerations for future research and suggest that ways to address an individual’s ability to identify, describe and regulate emotions should be considered when designing interventions to assist weight loss and management. Journal Article Appetite 133 270 278 01956663 Alexithymia, Emotional Dysregulation, Negative Urgency, Affect, Emotional Eating, BMI 1 2 2019 2019-02-01 10.1016/j.appet.2018.11.014 Claire Williams - Corresponding Author COLLEGE NANME Medicine, Health and Life Science - Faculty COLLEGE CODE FGMHL Swansea University 2020-10-22T14:25:01.6554512 2018-11-17T17:09:48.3755914 Faculty of Medicine, Health and Life Sciences School of Psychology Aimee Pink 1 Michelle Lee 0000-0002-1291-5895 2 Menna Price 0000-0002-0025-0881 3 Claire Williams 0000-0002-0791-744X 4 45961__17513__74e0503210a94204a25f6cc539a77a18.pdf 46190.pdf 2020-06-17T15:27:52.0916164 Output 845570 application/pdf Accepted Manuscript true Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating
spellingShingle A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating
Aimee Pink
Michelle Lee
Menna Price
Claire Williams
title_short A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating
title_full A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating
title_fullStr A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating
title_full_unstemmed A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating
title_sort A serial mediation model of the relationship between alexithymia and BMI: The role of negative affect, negative urgency and emotional eating
author_id_str_mv b104bd4518ffc637bf9091ef85ff3a9b
503d8657d47c066ada31f344b030c352
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author_id_fullname_str_mv b104bd4518ffc637bf9091ef85ff3a9b_***_Aimee Pink
503d8657d47c066ada31f344b030c352_***_Michelle Lee
e8d0f85a0d2762328c906c75b1d154b7_***_Menna Price
21dc2ebf100cf324becc27e8db6fde8d_***_Claire Williams
author Aimee Pink
Michelle Lee
Menna Price
Claire Williams
author2 Aimee Pink
Michelle Lee
Menna Price
Claire Williams
format Journal article
container_title Appetite
container_volume 133
container_start_page 270
publishDate 2019
institution Swansea University
issn 01956663
doi_str_mv 10.1016/j.appet.2018.11.014
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 Psychology{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}School of Psychology
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description Difficulty identifying and describing emotions (alexithymia) has been related to impulsiveness and negative affect, emotional eating and obesity. However, previous research findings concerning the relationship between alexithymia and obesity have been mixed and inconsistent, raising the possibility that the relationship is indirect and mediated by multiple unknown factors. The aim of the study was to comprehensively explore the potential pathways between alexithymia and obesity via a novel theoretical model, and for the first time, incorporate negative affect, impulsiveness and emotional eating as potential mediating factors. Two questionnaire-based studies were conducted; the first as an exploratory analysis within a student sample (N=125), and the second as a self-replication within a more representative general population sample (N=342). Study One revealed that difficulty identifying feelings predicted Body Mass Index (BMI) both directly (B = .1694, CI = .0194-.3194) and indirectly via impulsiveness and emotional eating (B = .0074, CI = .0001-.0315). In contrast, Study Two revealed that alexithymia predicted BMI indirectly via negative affect (when depression was included in the model; B = .0335, CI = .0019-.0660) or impulsiveness (when anxiety was included in the model; B = .0021, CI = .0001-.0066). Our findings provide partial support for the hypothesised model and offer original insight into the relationship between alexithymia and obesity. Additionally, our findings highlight important methodological considerations for future research and suggest that ways to address an individual’s ability to identify, describe and regulate emotions should be considered when designing interventions to assist weight loss and management.
published_date 2019-02-01T03:57:38Z
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