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CLASSICALLY CONDITIONED RESPONSES TO FOOD CUES AMOUNG OBESE AND NORMAL WEIGHT INDIVIDUALS: CONDITIONING AS AN EXPLANATORY MECHANISM FOR EXCESSIVE EATING
BY
Kulwinder Singh, M.A.
______________________________________________________________________________
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(PSYCHOLOGY)
May 2014
Copyright 2014 Kulwinder Singh
Object Description
| Title | Classically conditioned responses to food cues among obese and normal weight individuals: conditioning as an explanatory mechanism for excessive eating |
| Author | Singh, Kulwinder |
| Author email | kulwinds@usc.edu;kulwindss@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Psychology |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2014-05-13 |
| Date submitted | 2014-07-07 |
| Date approved | 2014-07-10 |
| Restricted until | 2014-07-10 |
| Date published | 2014-07-10 |
| Advisor (committee chair) | Dawson, Michael E. |
| Advisor (committee member) |
Schell, Anne M. Shen, Biing-Jiun Bob Knight Monterosso, John Brekke, John |
| Abstract | As prevalence rates of obesity greatly increase in response to changing societal and environmental landscapes, it has become clear that genetic influences cannot solely account for recent global surges in weight. One possible mechanism that has been proposed to contribute to the powerful effects of the environment on eating is associative learning. 121 obese, overweight, and normal‐weight students participated in a differential conditioning experiment using food cues as conditioned stimuli (CSs) and a sip of chocolate milkshake combined with a picture of an appetizing chocolate snack as unconditioned stimuli (UCS). Skin conductance and heart rate interbeat‐intervals were utilized as measures of autonomic conditioning, and self‐report valence changes and affective priming were used as measures of evaluative conditioning. It was hypothesized that obese participants would show greater responses to the UCS and stronger conditioning to food cues compared to normal‐weight participants. It was also hypothesized that autonomic conditioning would predict differential eating only for obese participants during a bogus taste test task. Results demonstrated that participants in the obese group had larger magnitude and more frequent responses to the UCS than did normal‐weight participants. For autonomic conditioning, only normal‐weight participants who were sated showed autonomic conditioning. For evaluative conditioning, obese and normal‐weight participants’ demonstrated conditioning based on the self‐report valence ratings but not on the affective priming task. Finally, autonomic conditioning predicted differential eating during the taste test only for obese participants who were food deprived. This association was non‐significant, albeit positive for normal‐weight participants who were food‐deprived. These results suggest that processes of Pavlovian classical conditioning may contribute to short‐-term increases in caloric consumption. However, additional steps which are further elaborated upon, must be taken to determine whether processes of classical conditioning may be a mechanism for weight gain and obesity. |
| Keyword | classical conditioning; differential autonomic conditioning; appetitive condtioning; food cues; obesity |
| Language | English |
| Format (imt) | application/pdf |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Singh, Kulwinder |
| Access conditions | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@usc.edu |
| Filename | etd-SinghKulwi-2626.pdf |
| Archival file | uscthesesreloadpub_Volume14/etd-SinghKulwi-2626.pdf |
Description
| Title | Page 1 |
| Full text | CLASSICALLY CONDITIONED RESPONSES TO FOOD CUES AMOUNG OBESE AND NORMAL WEIGHT INDIVIDUALS: CONDITIONING AS AN EXPLANATORY MECHANISM FOR EXCESSIVE EATING BY Kulwinder Singh, M.A. ______________________________________________________________________________ A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (PSYCHOLOGY) May 2014 Copyright 2014 Kulwinder Singh |
