The relation between maternal presence and infant's vocalization depended upon the infant's state: when the infant was in the active awake state, he vocalized less in the presence of the mother than when alone, thus indicating that the majority of early vocalizations are associated with a non-social situation. (Authors/RY)

An experiment was conducted comparing the effectiveness for producing response inhibition of high- and low-intensity physical punishment and elaborated verbal punishment when punishment was delivered either early or late in a response sequence. (Author)

The purpose of the project described was to demonstrate the feasibility of employing behavior modification techniques within an ongoing consultative model that can be implemented by minimally experienced consultant under the direction of a supervisor who remains physically remote from the teacher and the classroom. (Author)

Suggests that adults are quicker to learn to match the performance of a model similar to themselves in attitude if he is competent. Similarity of the model interferes with rate of learning if he is incompetent. Tables, graph, and bibliography. (RW)