Results showed that 2- and 3-dimensional forms affected 4- and 8-week-old infant visual behavior differently. (Author/JMB)

Two experiments explored whether stimulus familiarity influences prerecognition processing to generate differences in the apparent duration of tachistoscopic flashes. Subjects were 4- and 5-year-old children and adults. (MS)

Development of cognitive processes and visual perception in 128 Down Syndrome (DS) children (ages 5 to 18) was compared to that of 162 nonhandicapped children (ages 3 to 8). Linear, rather than stepwise, relationships between performance and chronological age in the DS subjects and similar to normal visual perceptual development were found.…

Examines development of processing speed in three backward masking studies, where presentation of second stimulus figure (mask) within a critical time interval from arrival of first figure (target) interrupts processing of first. Results indicate that processing time increases until early adolescence; changes are less marked after 13 years of age.…

Observers aged six to 24 years estimated distances between elements in patterns illustrating Gestalt grouping principles of proximity, similarity, closure, and good continuation. Magnitude of distance distortions decreased significantly with age, suggesting that perceptual development includes improving ability to disregard Gestalt groupings when…

Investigated developmental trends in part-whole perception. The effects of the whole on the perception of small parts was greater at the kindergarten level than at the 4th grade; and there was a change in the perception of the parts so that they came to look like the whole in shape. (DP)

This study was designed to investigate the development of the visual placing response in infants, as well as the visual mediation of the response and texture factors that influence this response during its development. The response was associated with age and apparently developed in two phases. (Author/DB)

Examined which of the attentional operations underlying exogenous orienting (disengaging, shifting, and/or engaging) improves with age in children from 6 to 14 years old. Found that disengaging attention alone distinguished between younger and older children's performance, regardless of whether attention alone or attention and associated sensory…

Auditory-visual pattern equivalence and temporal-spatial equivalence of 72 children of 7-17 years were examined. Data indicated that aspects of intersensory integration were still developing between the ages of 13 and 17. Accuracy in performance increased with age for intra- and intersensory matching. (RH)

Two experiments are described which explore the relationship between parental reports of infants' receptive vocabularies at 1 ; 6 () or 1 ; 3, 1 ; 6 and 1 ; 9 () and the comprehension infants demonstrated in a preferential looking task. The instrument used was the Oxford CDI, a British English adaptation of the MacArthur-Bates CDI (Words &…

This study investigated the hypothesis that specific reading disability is caused by visual-spatial disorder. Poor and normal readers in the second and sixth grades were presented both verbal and nonverbal stimuli and asked to identify and/or reproduce them orally and graphically. Results are discussed. (CS)

A total of 174 first, second, and third graders were tested to examine the relation between perceptual salience and cognitive style. The results indicated that implusives made more errors than reflectives only on trials requiring the use of the least salient dimension and that these performance differences decreased with age. (JMB)

The importance of awareness of the pictorial surface and point of observation was investigated in children and adults. The effect of station point was found to interact with pictorial surface and age, thus suggesting the development of a mechanism of compensation for the perspective distortion of oblique view. (JMB)

Reports on age differences found in children's (1) ability to execute appropriate differences in the uses of color while completing partially drawn scenes; and (2) sensitivity to differences between heraldic, gradation, harmonic, and pure use of color in a matching task. (GC)