1. Allen, K. Eileen, Hart, Betty M., Harris, Florence R., and Wolf, M. M. Effects of social reinforcement on isolate behavior of a preschool child. Child Develpm., in press.
2. Control of the behavior of schizophrenic patients by food;Ayllon;J. exp. anal. Behav.,1962
3. Schedules of reinforcement;Ferster,1957
4. Effects of positive social reinforcement on regressed crawling in a preschool child;Harris;J. ed. Psychol.,1964
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