This article provides a terminological framework to show the relationships among different types of visual deficits. It distinguishes between visual functions, which describe how the eye and the lower visual system function, and functional vision, which describes how a person functions. When visual functions are disturbed, the term "visual…

Through seriation, verbal seriation, and conservation tasks, investigated blind, partially sighted, and sighted children's understanding of quantity. Subjects were 81 children equally dispersed through these 3 groups. Age range was 4 to 17 years. Found similarity in concept acquisition among three groups that extended beyond quantity conservation…

The report provides preliminary findings of a study on the speed of processing visual information by partially sighted children. Findings revealed considerable variation in performance and suggested that some partially AL sighted children may not be able to cope with the test's time demands. (CL)

The ability of 16 school-age children with visual impairments and their sighted peers to recognize faces was compared. Although no intergroup differences were found in ability to identify entire faces, the visually impaired children were at a disadvantage when part of the face, especially the eyes, was not visible. Degree of visual acuity also…

Ten children (ages 7-10) with visuoperceptual problems were compared to sighted children on lexical decision tasks with words, nonwords, and format distorted items. The partially sighted children relied on phonological mediation as well as the "visual" route in word recognition. Regularity effects, as well as effects of intact and disrupted…

Described are instructional techniques and inexpensive manipulative materials that can be used to teach basic multiplication to blind and partially sighted children. (LH)

In an effort to study the cognitive mapping abilities of blind persons, tactile maps of a school campus were made by ten congenitally blind and ten blindfolded partially sighted high school students. (Author)

The word and picture processing abilities of 11 children (ages 6-10) with partial vision were studied in a variety of ways over a period of 14 months. The studies found that in processing words partially sighted children, like fully sighted children, used both lexical and nonlexical processing, though perhaps in difference balance. Recognition and…

In the analysis of ability structure and loss of vision, 228 blind persons (153 male, 75 female) heterogenous in respect to chronological age, sex, degree of blindness, age at onset, and duration, were compared to sighted controls. A test battery was administered which included tests for verbal comprehension, mental arithmetic, spatial ability,…