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Mood instability underlies the relationship between impulsivity and internalizing psychopathology
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Peters, Evyn M., Balbuena, Lloyd, Baetz, Marilyn, Marwaha, Steven and Bowen, Rudy (2015) Mood instability underlies the relationship between impulsivity and internalizing psychopathology. Medical Hypotheses, 85 (4). pp. 447-451. doi:10.1016/j.mehy.2015.06.026 ISSN 0306-9877.
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Official URL: http://dx.doi.org/10.1016/j.mehy.2015.06.026
Abstract
Impulsivity, the tendency to act without adequate forethought, has been associated with various internalizing disorders. Mood instability, the tendency to experience rapid and intense mood swings, relates to both internalizing disorders and impulsivity. We hypothesized that the association between mood instability and impulsivity accounts for the relationship between impulsivity and internalizing psychopathology. We conducted two studies to test our hypothesis. In Study 1 we used data from the 2007 Adult Psychiatric Morbidity Survey to examine mood instability in the relationship between depression and impulsivity. Mood instability and impulsivity were assessed with the Structured Clinical Interview for DSM-IV Axis-II Personality Disorders and depression was assessed with the revised Clinical Interview Schedule. In Study 2 we used data from the 1984 and 1991 British Health and Lifestyle Surveys to examine mood instability in the longitudinal relationship between impulsivity and internalizing symptoms. Mood instability and impulsivity were measured with the Eysenck Personality Inventory and internalizing symptoms were assessed with the General Health Questionnaire. In both studies we used a sequential regression analysis to test our hypothesis. Results from Study 1 showed that participants with depression were more likely to report impulsivity, but this effect became nonsignificant when mood instability was included in the same regression model. In Study 2 impulsivity predicted internalizing symptoms seven years in the future, but this effect became nonsignificant after mood instability was included in the same regression model. We conclude that impulsivity relates to internalizing psychopathology largely by being associated with mood instability. Research and therapy for internalizing conditions might be more productively directed at mood instability rather than impulsivity.
Item Type: | Journal Article | ||||||||
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Subjects: | R Medicine > RC Internal medicine | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences > Mental Health and Wellbeing Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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Library of Congress Subject Headings (LCSH): | Depression, Mental, Questionnaires -- Health aspects, Affective disorders, Mood (Psychology) | ||||||||
Journal or Publication Title: | Medical Hypotheses | ||||||||
Publisher: | Churchill Livingstone | ||||||||
ISSN: | 0306-9877 | ||||||||
Official Date: | October 2015 | ||||||||
Dates: |
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Volume: | 85 | ||||||||
Number: | 4 | ||||||||
Page Range: | pp. 447-451 | ||||||||
DOI: | 10.1016/j.mehy.2015.06.026 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Funder: | University of Saskatchewan. Department of Psychiatry |
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