Analyzes third grade children's performance on the Mueller-Lyer Illusion for whole and partial presentations of the figure. Results do not support Piaget's theory of perceptual development but are consistent with the theory of simultaneous and successive syntheses. (Author/BH)

The experiment described in this report investigates the effects of various cognitive cues in questions asked regarding the relationship of elements in pictorial depth perception. The subjects of this study are 40 third grade Black and Puerto Rican children. They are confronted with four pictures from the Hudson Depth Perception Tests and asked to…

Spatial aptitude tests designed for elementary school children were given to third-grade students from both suburban and rural schools in Pennsylvania. Results were scrutinized by the declared favorite subjects of the participants and organized by gender. Students who preferred science and mathematics did better on spatial tests than students who…

A 3-year study attempted (1) to predict reading achievement through third grade, (2) to establish data for a nonverbal discrimination test, (3) to devise supplementary perceptual instructional programs, and (4) to develop screening devices to assess perceptual abilities and identify potential learning disabilities. In first, second, and third…