The results showed that accuracy depended on both stimulus complexity, modality, and mental age, regardless of whether or not the Ss were retarded. The selection of haptic search styles also depended on these factors but, in addition, was influenced by the intellectual status of the children. (Author/DLS)

Designed to determine the effects of multiple and linear imagery on performance of a visual location task, this study also considered whether scores on such a task were affected by the interaction of presentation mode (multiple and linear imagery) and perceptual type (haptic and visual). (Author/JEG)

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)

Three experiments were performed using an aperture-viewing technique to assess the accuracy of shape perception when subjects were required to emit eye movements in order to pick up shape information, compared with the accuracy of shape perception when subjects were not required to emit eye movements. All three experiments explored whether the…

In the experiment reported here, dyslexic children are compared with controls in their processing of single digits. The rationale for the present study relates to a concern to identify if there are specifically unique aspects of how dyslexic children process visual information. (Author)

A series of experiments tested a recent suggestion that vertical symmetry of a stimulus display can serve as a visual diagnostic for responding "same" in a letter-matching task. The data of chief interest were same reaction times to vertically symmetric (e.g., AA) and asymmetric (e.g., LL) displays, each composed of two side-by-side uppercase…

This study showed that measurable deficits in visual perception were not interfering with normal reading achievement among these second graders, yet there was no sign of compensatory development of auditory skills. (HOD)

Attempts to establish the degree of perspective convergence, which the Western observer will accept as a realistic portrayal of objects drawn in perspective, and to determine the relationship between acceptable convergence and viewing conditions. (Author/RK)

Revealed that "reflective" children performed better than "impulsive" children on a test of reading readiness when verbal IQ was held constant and on a test of auditory-visual integration. (KS)

Results failed to prove that a deaf group would perform as well as a hearing group on a test of associated pairs with high visual imagery but worse with material with high auditory imagery. (KS)

Four experiments involving 367 college students and 259 sixth graders demonstrate that children and adults, when asked to represent vision schematically, have a bias to draw arrows pointing away from the eye and toward a visual efferent. The role of this type of representation in learning is discussed. (SLD)

The construct validity of the Hooper Visual Organization Test (VOT) (H. Hooper, 1983) was studied by comparing it to conceptually similar and dissimilar cognitive abilities in a principal components analysis of results from 240 participants with cognitive impairment. Results suggest that the VOT is best considered a measure of visual-spatial…

Using the split-middle methods of trend estimation, evaluates the accuracy of interpretation of single subject data by comparing raters' visual analysis of behavior change with statistical determination of behavior change. Results indicate visual analysis accuracy was less than chance. Rater and student characteristics largely did not affect the…

Two studies of development of spatial representation with two dimensions found that children as young as five years use the same two independent dimensions in fine-grained spatial coding of location in a circle as adults use--radius and angle. The adult pattern, where angle as well as radius is coded hierarchically, emerges by nine years. (HTH)

Tested visual-perceptual, attentional, and visual-motor skills of 16 school-age children who had been born pre-term and "healthy," and 16 who had been born full-term. Found that compared to subjects born full-term, pre-term subjects performed well on most visual perception tasks, but less well on visual search and visual-motor tasks.…