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Reeback, Robert T. – 1968
Seven 18- to 32-month-old children received from seven to 26 experimental sessions each between October 1966 and April 1967. A session lasted from 5 to 15 minutes and concerned control over the verbal responses of the children with token-operated reinforcement devices. In order to make the results of the experimental sessions meaningful, an…
Descriptors: Conditioning, Infant Behavior, Infants, Language Acquisition