Attempts to account for many of the differences between vowels and consonants and between speech and nonspeech, in terms of the range of the contexts in which they are set. Explanations of the different overall levels of discriminability in vowels and consonants in various tasks in terms of their "encodedness" are replaced by a general model…

A previously proposed model for memory based on neurophysiological considerations is reviewed. It is extended by introducing positive feedback of a set of neurons onto itself and allowing the neurons to saturate. The resulting model is analyzed by distinctive features, categorical perception, and as it applies to probability learning. (Editor/RK)

The primary concern in this study has been to interpret the ways in which perception of a letter depends on properties of other letters present in the same display. (Author)

This research assesses whether the presence of noise elements in a visual display affects the detection of target letters at the perceptual or feature extraction level of information processing and whether (a) input or processing channels operate in an independent or interactive fashion and (b) how the spatial relation between signal and noise…

The purpose of the experiment was to ascertain whether the duration of the spiral illusion could be extended by a 'learning procedure' which would distinguish a longer-term learning effect from short-term adaptive changes due to inhibition. (Author)

The interdistances between thirteen places situated in different parts of the world were estimated by 60 subjects. The estimates were analysed by Kruskal's multidimensional technique and, after a cosine transformation, by factor analysis. (Author)

The study tested the applicability of portions of the Porter and Lawler model in a cognitive training environment and examined the relationships among some behavioral variables in Air Force Undergraduate Pilot Training. The variables analyzed were the Maslow need hierarchy, effort, abilities, role perceptions, performance, satisfaction and the…

Professional librarians were subjects for an exploratory study which used a model to test two hypotheses examining whether use of assertiveness by subordinates is associated with desired leader behavior. Findings suggest people's assertiveness is not related to their perception of their leader's behavior or their own role stress. (Sixty-three…

Discussion of how we perceive meaning from graphics highlights a computer simulation model, UCIE (Understanding Cognitive Information Engineering), that simulates graphical perception. An empirical study is described that compared actual performance to UCIE predictions related to the amount of time required to answer a question in various…

This experimental study has three aims: (1) to give a detailed description of imitative behavior as it develops during the first six months of life; (2) to compare imitative responses perceived through visual, kinesthetic and auditory modalities; and (3) to describe and explain the regulating mechanisms and processes present in the early…

THIS REPORT OF A THREE-YEAR RESEARCH PROGRAM ON PUBLIC SCHOOL CLASSROOM ACTIVITIES CONSIDERS THE CLASSROOM TO BE AN INTEGRATED SOCIAL SYSTEM. ITS CONCERNS ARE WITH EDUCATIONAL PROCESSES THAT MAY BE OBSERVED IN THE CLASSROOM, WITH THE CONCEPTUALIZATION OF CLASSROOM EVENTS, WITH THEORY ABOUT THOSE EVENTS, AND WITH DATA BEARING ON THAT THEORY.…

"Compensatory" and "spillover" models have described the two basic relationships individuals form between work and nonwork experiences. The assembly line worker seeking compensation in nonwork activities for deadening work exemplifies the first. A person whose nonwork activities are an extension of work experiences exemplifies the second. The…