Major purpose of the experiments was to use an instrumental response to study the form of semantic generalization gradients obtained following single-cue and discrimination training procedures. (Authors)

One hundred twenty-eight preschool boys were subjects in a 4x2x2 factorial design to investigate the change in reinforcer efficacy as a function of prior stimulus exposure. The factors were: (1) amount of repetition, 5, 25, 45, or 65; (2) reinforcer, good or bell; and (3) satiator, good or bell. Two additional groups were run as control groups to…

The greater part of this paper is dedicated to a non-technical discussion and criticism of the principles of Skinnerian behaviorism. Various aspects of the theory are examined, and its inability to deal with verbal behavior as a productive and creative activity is asserted. The author's point of view is that expressed by Noam Chomsky in his…