These experiments suggested that human subjects perceived velocity and acceleration directly and accurately. As well, they suggested that extrapolation of velocity is performed accurately through a direct extension of the movement that was seen. (Author/RK)

Examines in some detail Richard Semon's analysis of human memory, places this analysis in its historical context, and discusses some reasons why this work is virtually unknown today. (Author/AM)

Caution is urged in applying the normative-descriptive distinction to selection models, because ambiguities arise when the distinction is actually carried out (AA 529 125). A multidimensional structure may be needed to account for strategy, and the relationship between strategy and such nontask variables as intelligence is needed to clarify the…

The latency to classify a test item as not being from a memorized list of category words is usually slower when the test items are categorically related to memorized words than when they are unrelated. This observation has been explained by four models of recognition, which are evaluated here. (Editor/RK)

Four experiments were conducted where words were recalled after presentation either in hierarchical fashion or in a matrix. The intention was to examine whether the original advantage for hierarchical retrieval systems could be duplicated for matrix systems, and if there was any particular advantage or disadvantage for either type of structure.…

Cronbach, in 1957, supported the unification of two disciplines of scientific psychology--the correlational and experimental approaches. The remaining papers in this journal issue--which served as the basis for a 1978 American Educational Research Association Symposium--address this issue. (Author/RD)

Explores individual environmental responsibility in private and public strategic decision-making. The theoretical foundation underlying the research design is social responsibility theory. Differences between interest group subjects and general population on attitudinal and behavioral measures of environmental responsibility were found to be…

In a list presented for study, the successive occurrences of a repeated item may appear either in adjacent or nonadjacent list positions. This research attempts to determine the relative size of this spacing effect, either for massed-presentation items (MP) or distributed-presentation items (DP), in long-term tests of retention as compared to that…

Two experiments were conducted with rats to investigate variables responsible for the effectiveness of using a safe platform in two-way avoidance training and to evaluate the relative efficacy of several theoretical positions (conflict reduction, reinforcement, and freezing attenuation) that were offered to explain the wide differences in…

Attempts to provide empirical evidence for a functional correspondence between perception and imagination. Includes a perceptual-control condition in examining visual memory and imagery. (Author/RK)

Four experiments are reported investigating previous findings that speech perception interferes with concurrent verbal memory but difficult nonverbal perceptual tasks do not, to any great degree. (Editor)

Voluntary forgetting of a list of verbal items was tested under two conditions. Results show that both recall and recognition increase as a function of the spacing between the two occurrences under the Remember-Forget condition, but not under the Forget Forget-Remember condition. (Editor/RK)

Eighty-six adults serially recalled lists of visually presented consonant letters similar in auditory or visual features or dissimilar on both feature sets. There were significantly more errors at every auditory list position than at the corresponding visual and neutral list positions, which did not themselves differ. Positive correlation exists…

Interresponse time (IRT) data were used to investigate the hypothesis that the learning to cluster (effectively organizing presented material) phenomenon should be interpreted as the result of a retrieval strategy. A systematic increase of category exit criterion should produce an increase in clustering because more category words should be…