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Monetary contracts in weight control: Effectiveness of group and individual contracts of varying size
Ist Teil von
Journal of consulting and clinical psychology, 1983-04, Vol.51 (2), p.242-248
Ort / Verlag
United States: American Psychological Association
Erscheinungsjahr
1983
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
89 overweight adult males (aged 35-57 yrs) drawn from a community population sample were assigned randomly to 1 of 6 treatment groups for weight reduction. All groups participated in a 15-wk behaviorally oriented program. Each involved a monetary contract in which participant deposits were returned contingent on weight lost. The program goal was 30 pounds lost. Groups varied in (a) amount of deposit ($30, $150, or $300) and (b) type of contract (refunds contingent on either individual or mean group performance). It was found that group contracts were associated with significantly more weight loss than individual contracts. This difference was maintained over 1-yr follow-up. Amount of deposit was positively, although weakly, related to short-term treatment outcomes. However, the short-term advantage of the larger contracts disappeared rapidly with time. Neither type nor amount of deposit significantly affected participation rates. Overall weight losses in the study were large. (28 ref)