Replication of a study that showed that deaf 15- to 18-year- olds could accurately identify a significant number of isolated signs presented well out in peripheral vision found that 8- to 12-year-olds could also identify such signs, although results showed a significant effect of age on performance. (Author/CB)

Two groups of deaf college students, including 104 deaf from congenital rubella syndrome (CRS) and 138 deaf from other reasons, received complete audiometric assessments and ophthalmological examinations. Degree of hearing loss did not differ between groups. However, 7 visual problems were found to be more prevalent with the CRS population.…

In order to assess vision in Alzheimer's disease, gerontologists must use tests that make minimal cognitive demands on the subject. Using such tests revealed a pattern of deficits in color discrimination, stereoacuity, contrast sensitivity, and backward masking. Impaired vision predicts deficient performance on numerous tests of cognition. (JPS)

A study examined detailed data on 100 consecutive Special Populations Assessment and Rehabilitation Center patients and found the program to be successful in conducting interdisciplinary visual evaluations of those with multiple impairments. The types of adaptive-testing procedures used for visual acuity and visual field testing are described. (CR)

Evidence on the poorer spatial visualization ability in various Negro populations compared to the White populations and on the direction and magnitude of sex differences in spatial ability relative to other abilities suggests the genetic hypothesis that spatial ability is enhanced by a sex-linked recessive gene and that, since the 20-30 percent…

Skilled readers read passages while their eye movements were monitored. Certain critical words were changed by the computer as the eye was in motion. Subsequent data indicated how wide the area is from which a reader acquires information during a fixation in silent reading. (Author/BJG)

Dynamic visual acuity (DVA) is defined as the performer's ability to visually discriminate parts of an object when there is relative motion between the target and the performer. According to research findings, this visual attribute may play a key role in motor-task performance. Researchers have found a significant relationship between DVA and…

In this study, two similar depth perception experiments were conducted to investigate 3-month-old infants' perception of changes in depth while they were being moved. In the first, the subjects, 18 infants (80 to 105 days old) were lowered face down towards the textured floor of a 3-sided enclosure (visual crib). Three experimental conditions were…

Vision is so important to scholastic success that almost all states require by law some kind of vision testing of school children. The ideal visual screening program would involve the kind of test or tests a classroom teacher could administer and would be fast, thorough, and accurate. However, present commercial vision screening batteries fail to…

Two important processes in the acquisition of visually presented information are the ability to maintain discrete perceptual events as separate in time and the ability to abstract information from brief exposures. Five phenomena were measured which appear to reflect these abilities. Critical Flicker Frequency (CFF) is the intermittency rate at…

Two experiments were conducted with children to determine the units of word perception used in recognizing isolated words. In the first experiment, kindergarten children practiced visually discriminating whole words (big, pig, dig), single letters (b, p, d), or geometric forms (triangle, circle, square) before learning to read three words (big,…

The physiological condition of the adult learner as related to his learning capability is discussed. The design of the instructional process, the selection of learning tasks, the rate at which instruction occurs, and the nature of the instructional setting may all be modified by the instructor to accomodate the variable physiological conditions of…

Vision assessments were provided to 297 preschoolers in nine Head Start programs in New York State. The protocol used provided a thorough evaluation and required only seven minutes per child. Sixty-three children (21.2%) were referred for further evaluation. Visual deficits detected included decreased acuity, strabismus, astigmatism, and…

A 1975-76 Swedish study of 643 handicapped persons born in 1918 or earlier and a follow-up study conducted 5-8 years later found a higher mortality rate than the general mortality in the same age group. Population changes are described, focusing on institutionalization, need for services, functional level, hearing, and vision. (Author/JDD)

Describes the uses of lipreading and the factors which aid the partially deaf person in acquiring it. Notes the acceptance which lipreading has gained as a valid tool of communication. Bibliography. (RW)