EFFECTS OF A VARIABLE‐RATIO REINFORCEMENT SCHEDULE WITH CHANGING CRITERIA ON EXERCISE IN OBESE AND NONOBESE BOYS

Rayleen V. De Luca · Stephen W. Holborn

72 citations0/0 files storedJournal of Applied Behavior Analysis

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Behavioral and Psychological Studies Physical Activity and Health Obesity, Physical Activity, Diet

Abstract

The effects of a variable-ratio schedule of reinforcement on pedaling a a stationary exercise bicycle were examined. Three obese and three nonobese 11-year-old boys were individually tested five times weekly for approximately 12 weeks. A changing-criterion design was used in which each successive criterion was increased over mean performance rate in the previous phase by approximately 15%. The contingencies of the successive criteria resulted in systematic increases in rate of exercise for all children. Final variable-ratio rates were higher than those under fixed ratios found in previous research, with rates for 2 of the 3 obese boys approximating those of the nonobese.

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References

1983Single-case research designs: Methods for clinical and applied settings 1984Progress in behavior modification 1896Psychology and physiology.1983Instructional control of human operant behavior.1976THE CHANGING CRITERION DESIGN 1966SOME EFFECTS OF INSTRUCTIONS ON HUMAN OPERANT BEHAVIOR.1960SINGLE AND MULTIPLE SCHEDULES OF REINFORCEMENT IN DEVELOPMENTALLY RETARDED CHILDREN1,2

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