What shade of gray a surface appears is related to the perceived distribution of light and shadow, which in turn depends on the perceived spatial relation between the surface and its neighbors. (Author/ BB)

First, third, and fifth graders made judgments of the geographical slant of surfaces depicted in photographs while optical slant and postural orientation were manipulated. The results indicated the existence of a linear mechanism which compensates for the effect of postural inclination. (JMB)

Although perception theory and research are relevant for learning theorists and educational technologists, they have not been regarded as a practical resource by most. Their place in education will be determined by empirical testing of psychological hypotheses as well as by philosophical assumptions. (Author/STS)

A visually directed sensory motor training program with a 30-day duration did not enhance the depth perception of five-year-old children. (MM)

In two experiments, forty 26-week-old infants were repeatedly exposed to an object and were then shown an object that was different from the original object in color, shape and/or texture. Results showed that looking and manipulation increased for the novel shape and texture objects and looking increased for the novel color object. (Author/JMB)

Teaching suggestions are offered for teaching spelling to poor spellers strong in auditory processing skills but weak in visual processing skills. (Author/DB)

Describes subjective-contour illusions and gives explanations for perception of shape and brightness in these figures. Supports cognitive mechanisms rather than psychological mechanisms. Gives examples of subjective-contour illusions and summarizes explanations of other psychologists with regard to this topic. (CW)

Discusses definitions of learning disabilities and strategies for identifying and accommodating learning disabled adults during job training. (SK)

Observers aged six to 24 years estimated distances between elements in patterns illustrating Gestalt grouping principles of proximity, similarity, closure, and good continuation. Magnitude of distance distortions decreased significantly with age, suggesting that perceptual development includes improving ability to disregard Gestalt groupings when…

A model of mental representations is developed and shown to provide a framework for interpreting research. The content of awareness is characterized as a model of the world capable of simulating future events, anticipating present events, and thereby formulating appropriate actions. Properties of awareness and of underlying processes are…

Reviews the literature dealing with the loci and parameters of visual selective attention. It is maintained that input selection can be found at several points in the course of processing. Specifically, a case is made for very early perceptual selection, called perceptual tuning, which can be based on higher-order conceptual or structural stimulus…