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3. The effects of contingent and noncontingent rewards on the IQ scores of children of above average intelligence;Clingman;Journal of Applied Behavior Analysis,1975
4. Galbraith, G., Ott, J., & Johnson, C. (in press). The effects of token reinforcement on WICS-R performance of low-socioeconomic Hispanic second graders. Behavioral Assessment.
5. Developmental potential of preschool children;Hausserman,1958