The essays in this book concern themselves with the carefully sequenced interplay between sensory, imaginative awareness and disciplined, scientific knowledge. They deal specifically with sharpening visual perception. The opening essays analyze the fundamental characteristics of visual faculties. The next group of essays deal with vision as an…

Finds significant differences for males and females on the "Mental Rotation Test" within and across trials, but does not show a differential response to training and practice by females, as was hypothesized. (RL)

Based on the more general principle that all thinking (including reasoning) is basically perceptual in nature, the author proposes that visual perception is not a passive recording of stimulus material but an active concern of the mind. He delineates the task of visually distinguishing changes in size, shape, and position and points out the…