Research on learning and conditioning suggests that verbal response modification does not occur in the absence of the subject's ability to define verbally (1) the response-reinforcement relationships and (2) his intention to change his behavior in the direction of reinforcement. This seems to be true for operant conditioning of verbal behavior,…

At the Child Language Development Center at the University of Rochester, basic research in children's verbal behavior and the exploration of procedures for extending successful laboratory techniques to the typical preschool setting are being continued. Experiments in contingency management and the establishment of requisite antecedent behaviors…

This publication reports on research which has investigated phoneme acquisition and carry-over in a programmatic fashion. This research began with investigations of the effect of an extension of stimulus control of new phoneme responses through a systematic operant procedure. After quantifying the effect of such procedures in terms of stimulus…