A sample of 44 infants of five months of age showed a significant reaching preference for the apparently nearer region of a computer-generated display. This indicated that the infants were sensitive to boundary flow information for depth at an edge. (RH)

Spatial matching--the ability to distribute search effort in accord with the distribution of hidden resources--was studied in 18- to 54-month-old children. The principal development was the appropriate use of win-shift response. (Author/RWB)

Studies the relationship between timing of puberty and spatial ability in 53 undergraduate women. Results do not show evidence for greater spatial ability on the part of those who have late maturation. (RJC)

Reported are research findings that (1) illustrate the importance of primary spatial orientation for children's and adults' use of symbolic spatial skills and (2) indicate the importance of the distinction between primary and secondary spatial orientation. At least two major ways exist in which humans gather and use spatial information. The…

A 2-part investigation was conducted to examine the ways children resolve the inherent ambiguity of spatial descriptions in terms of cues indicated by the three constituents of spatial propositions: predicate, referent, and relatum. In the first study, it was hypothesized that certain objects, structural markers, and definite articles accompanying…

Comparison of 2 totally blind, 2 visually impaired, and 9 normally sighted children (ages 5-8) on tasks of visual perspective taking found that the totally blind children were older than the other children when they mastered the tasks, made the highest percentage of errors before mastery, and made different errors. (Author/DB)

The relationship between the manner in which environments are encountered and the nature of environmental features in the construction of spatial representations was examined. It was found that performance of a thematic activity facilitated construction of a spatial representation of a large-scale environment. (PCB)

Reports the results of a cross-cultural study of the development of five spatial competencies in samples of Thai and Australian children. The pattern of development was found to be similar for seven- and eight-year-olds but different for four- and five-year-olds. (Author/JN)

Explores longstanding inconsistencies in Piaget's account of development of spatial representation and perspective-taking. Examines Piaget's early writings and the findings of the original "three mountains" experiment. Concludes that Piaget's alternative theory is compatible with contemporary thinking and is important as a contributory…

Examines the ability of six- and eight-year-old children to hide and recover 20 marbles in a large room containing 100 possible sites. Shows that children tend to concentrate activities in sections of the room and are sensitive to clusters of proximal sites. (HOD)

Investigates effects of perceptual salience and specific orientation values on 16 kindergarten and fourth-grade children executing a speeded sorting task. Kindergarten results supported the cognitive processing prediction that orientation sorting times would vary as a function of condition, but no differences were obtained for the fourth-grade…

Investigated spatial thinking abilities of sixth- and tenth-grade students from two locales--a school on the Navajo reservation and schools in Mesa, Arizona. Overall findings support the contention that there were no substantial time delays or advances in development of selected spatial abilities of Navajo students compared to parallel non-Indian…

Second and third graders and fifth and sixth graders were tested in a very large, unfamiliar environment to determine the relation of their knowledge of an abstract reference frame to performance on a spatial inference task. (HOD)

Studies the language and visuo-spatial skills of preschool children with past histories of lead poisoning. Suggests that specific behavioral sequelae exhibited by such children may be predicted by the factor of their age at the time of lead ingestion. (AS)

Results of two studies suggested that acquisition of route mapping during the preschool years provides a means of organizing spatial information and internal representations necessary for successful problem solving in general. (Author/RH)