Subjects were given a set emphasizing the importance of facilitative conditions or one in which no specific mention was made of the conditions. Although learning was not clearly demonstrated, the results indicated that the experimenters high in facilitative conditions elicited a greater percentage of the response class than did experimenters low…

The present study attempted to duplicate earlier findings and to investigate the effects of mechanical as well as personal reinforcement. However, the acquisition and extinction differences between oral and anal scoring types reported in the earlier studies were not obtained with either personal or mechanical reinforcement. (Author)

Comments on article by Ray E. Hosford in same issue. (Author/CJ)

The author relates contemporary work on imitation and training to the historic contributions of Itard and Sequin. (RD)

Research supported in part by a United States Public Health Service grant. Article based on a PhD thesis submitted to the University of Pittsburgh. Reprints from: E.N. Murray, Dept of Psychology, State Univ of N.Y., Buffalo, N.Y.

This research was supported by Research Grant No. 30-200-50, Indiana University Foundation, Indiana University.

An empirically developed infant and preschool reinforcement survey was completed by 35 parents and 21 children. Test-retest coefficients were computed on these data after a one-week interval. The development of the survey, as well as its usefulness for school psychologists, is described. Survey is appended. (Author)

Suggests that the use of the operant conditioning paradigm, as it has been applied to infant social, vocal behavior, fails to take into account the social nature of human infants over and above the rigid theoretical rationale of the Paradigm. (MP)