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A quantitative review of overjustification effects in persons with intellectual and developmental disabilities.
- Source :
- Journal of Applied Behavior Analysis; Spring2017, Vol. 50 Issue 2, p206-221, 16p
- Publication Year :
- 2017
-
Abstract
- The overjustification hypothesis suggests that extrinsic rewards undermine intrinsic motivation. Extrinsic rewards are common in strengthening behavior in persons with intellectual and developmental disabilities; we examined overjustification effects in this context. A literature search yielded 65 data sets permitting comparison of responding during an initial no-reinforcement phase to a subsequent no-reinforcement phase, separated by a reinforcement phase. We used effect sizes to compare response levels in these two no-reinforcement phases. Overall, the mean effect size did not differ from zero; levels in the second no-reinforcement phase were equally likely to be higher or lower than in the first. However, in contrast to the overjustification hypothesis, levels were higher in the second no-reinforcement phase when comparing the single no-reinforcement sessions immediately before and after reinforcement. Outcomes consistent with the overjustification hypothesis were somewhat more likely when the target behavior occurred at relatively higher levels prior to reinforcement. [ABSTRACT FROM AUTHOR]
- Subjects :
- BEHAVIOR
BEHAVIOR modification
BEHAVIOR therapy
CONFIDENCE intervals
STATISTICAL correlation
DEVELOPMENTAL disabilities
PEOPLE with intellectual disabilities
META-analysis
MOTIVATION (Psychology)
PROBABILITY theory
REINFORCEMENT (Psychology)
RESEARCH funding
REWARD (Psychology)
T-test (Statistics)
SYSTEMATIC reviews
THEORY
SECONDARY analysis
EFFECT sizes (Statistics)
INTER-observer reliability
DATA analysis software
DESCRIPTIVE statistics
Subjects
Details
- Language :
- English
- ISSN :
- 00218855
- Volume :
- 50
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Journal of Applied Behavior Analysis
- Publication Type :
- Academic Journal
- Accession number :
- 122381684
- Full Text :
- https://doi.org/10.1002/jaba.359