Suggests that deception tends to produce more awareness of ulterior purposes in subsequent experiments and proposes that researchers not utilize college students so extensively as subjects. Bibliography and tables. (RW)

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)

Shows that subjects who receive the impression that psychology experiments are worthless exert less time and effort in task performance than subjects who believe in favorable comments, although both groups indicate similar amounts of effort on self-rating scales. Bibliography and table. (RW)