It is concluded from the study that the three tests tested are not interchangeable despite the fact that they appear to measure similar perceptual functions. All three tests should be combined in a battery if used for diagnostic purposes. (Author)

Investigated was whether partially seeing children see the Snellen E, printed in selected colored inks on various colored backgrounds, at different distances in terms of initial recognition and best focus. (Author)

Training improves the ability of human observers to discriminate between two similar directions of motion. This gradual improvement is specific to the direction on which an observer is trained, enduring for several months. Improvement does not affect motion perception generally, nor does it depend on recognition of details of the movement. (Author)

Forty-two deaf children, eight- to 12-years-old and randomly divided into two groups, viewed the television program "Shazam" without captions (Group 1) and with captions at a simple language level (Group 2). Results indicated that captions enhance perception of emotional complexity by deaf children. (Author/MC)

Two experiments tested possible explanations for previous research demonstrating lower span of apprehension for learning disabled students. In experiment 1, the length of visual persistence was less for LD subjects, while in experiment 2, the rate of information pick-up was slower for LD subjects. (CL)