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And Others; Franzini, Louis R. – American Journal of Mental Deficiency, 1978
Thirty-nine trainable mentally retarded adolescents were presented with a list of 32 reward options, consisting of primary (food) and secondary (cash equivalent) rewards that were immediately available or delayed one day at a ratio of 1:2. (Author)
Descriptors: Adolescents, Contingency Management, Delay of Gratification, Exceptional Child Research