Differential effectiveness of a deposit contract as a concomitant to a weight reduction program

dc.contributor.advisorVincent, John P.
dc.contributor.committeeMemberBaxter, James C.
dc.contributor.committeeMemberRozelle, Richard M.
dc.contributor.committeeMemberJackson, Andrew S.
dc.creatorFriedman, Lois C.
dc.description.abstractThe present study attempted to investigate the differential effectiveness of deposit contracts both in terms of short and long-term gains. It was hypothesized that behavior change attributed to oneself would be maintained to a greater extent than behavior change attributed to an external source, namely, a deposit contract. A ten-week therapy program for the treatment of obesity, emphasizing situation control and a balance between caloric intake and energy expenditure, was conducted over a thirteen-week time period. Thirty-eight obese subjects were assigned from stratified blocks, according to degree of overweight, to one of four experimental conditions: 1) therapist A, no-deposit, 2) therapist A, deposit, 3) therapist B, no-deposit, 4) therapist B, deposit. Measures of weight loss, which included absolute pounds lost, percentage body weight lost, reduction indices, and changes in body density, were assessed from pre- to posttreatment and at a two-month follow-up. The data indicate that the self-management procedures were effective in the reduction and maintenance of weight and in changing eating and exercise habits; that deposit contracts, as compared with no deposit contracts, were not superior in facilitating weight loss; and that weight maintenance was due to a complex interaction of therapist variables and experimental condition. The relationship between weight maintenance and whether subjects attribute behavior change to themselves or an external source remains unclear. There was a substantial attrition rate and marked variability in treatment response. The need for improved screening procedures and ways of insuring maintenance of treatment effects were discussed. Furthermore, the assumptions that underlie a behavioral approach to the treatment of obesity were questioned, and a broader conceptualization of obesity, whereby multiple etiological factors are considered in formulating a treatment strategy, was suggested.
dc.description.departmentPsychology, Department of
dc.format.digitalOriginreformatted digital
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. §107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.titleDifferential effectiveness of a deposit contract as a concomitant to a weight reduction program
thesis.degree.collegeCollege of Social Sciences
thesis.degree.departmentPsychology, Department of
thesis.degree.grantorUniversity of Houston
thesis.degree.nameMaster of Arts


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