Investigating the effects of marijuana on human psychological functioning, this study differs from previous research in two ways: 1) it is concerned with relatively complex cognitive processes; 2) it has a theoretical rationale. The general hypothesis of the study states that marijuana will impair its user's ability to form and use abstract…

Sixty-four existing motion picture tests are listed and briefly described. Included are tests of perception, memory, abstract reasoning, attention span, and language. (RC)

Compared was the performance of nine educable mentally retarded (EMR) children (mean age 9 years) with the performance of 50 normal kindergarten children on a test of visual perception at the abstract level. The test of 17 items involved the dimensions of size, shape, and color at four steps of skill attainment (recognition, discrimination,…

Tests indicate that females have innately less ability to perceive spatial relationships than males, but that proper training can improve spatial performance and reduce this natural disparity. (JD)

Performance of congenitally blind children and blindfolded children was compared on tasks requiring spatial reasoning and shape recognition. Blind subjects performed at least as well as blindfolded subjects on simple two-dimensional tactual processing tasks, but less well on more complex tasks requiring them to store, compare, and label objects.…

This study examines the relationship between development of a child's ability to coordinate perspective and his ability to conceptualize spatial relations on a map. One hundred and four school children from inner city, urban fringe, and suburban schools, grades K-6, were administered a Test of Coordination of Perspectives and a Test of Map…

This paper describes a visual-motor training program that has been successfully implemented with children aged 3-11. Various studies related to the development of children's visual-motor skills are reviewed and a rationale associated with the teaching of appropriate visual-motor processes is explained. Application of this rationale to the visual…

This investigation analyzed sex-related and age-related differences on spatial visualization tasks, reasoning tasks, and mathematical problem-solving tasks; and the effects instruction in visual thinking would have on these differences. Students in fifth grade, ninth grade, and in college, were tested before and after twelve weeks of instruction…

A class of preschoolers, aged 44-63 months and grouped according to age, sex, sibling position, family size and the occupation of each parent, were the subjects of a 2-part study to examine preschoolers' perceptions of mothers. In the first part of the study, each child was shown 4 sets of pictures depicting a variety of possible mother figures.…

The rationale and development of a new series of motion picture tests of perceptual abilities of young children are described, and preliminary data regarding their reliability and validity are presented. The data suggests that the film tests are promising new perceptual measurement instruments. (MS)