Five experiments were conducted in an attempt to establish whether elementary school children find it difficult to identify certain geometrical shapes when presented in the less usual orientations. (MP)

Visual perceptual abilities of 47 institutionalized trainable retarded Ss (mean age 20 years) were compared on selected measures of visual perception. (Author/PHR)

The results of this study provide educators and researchers with further information concerning selected elementary students' ability to catch balls as a result of specific ball color and background color combinations, therefore offering some additional insight into factors that influence catching behavior. (MB)

Explores the possibility that measurable individual differences in hypnotic susceptibility or the ability to attend selectively to informational cues may account for a portion of the variability found in several types of geometrical visual illusions. (Author/RK)

Older individuals have been reported to use imagery mediation less in remembering verbal material. To determine whether this is due to decrease in the speed with which verbal stimuli are recoded into pictorial representations, the reaction time of 12 old (63-78) and 12 young (17-25) subjects for matching verbal descriptions to geometric shapes was…

Investigated with 64 upper middle class first-grade children of normal intelligence and visual perception was the construct validity of the trait of visual figure-ground perception. (Author/DB)

Evaluated with 20 disabled readers (6-10 years old) was the relationship between the Jordan Left-Right Reversal Test and word discrimination abilities. (DB)

Two experiments are described which are concerned with the development of referebtial ability in children. (Editor)

Although a feature detection theory of pattern recognition is consistent with many recent physiological findings, the specific rules governing the perception of the distinctive features of letters have not yet been determined. This article presents two new experimental procedures for determining these rules. (Editor)

Visual masking occurs when one stimulus interferes with the perception of another stimulus. Investigates which matters more for visual masking--that the target and masking stimuli are flashed on the same part of the retina, or, that the target and mask appear in the same place. (Author/RK)

Subjects were required to discriminate previously learned "standard" versions of angular shapes from randomly perturbed "distrator" versions that varied in similarity to the standard. (Editor)

Investigated the nature of spatial representations underlying simple visually guided actions with 3- and 7-month-old infants. Saccades in older infants were executed within body-centered spatial coordinates that account for intervening eye movements, whereas younger infants responded according to the target's retinocentric locations without…

Effects on the event-related potential (ERP) waveform of differences in stimuli (task difficulty) and threshold were studied with 35 undergraduates performing a visual inspection time task and 30 performing a pitch discrimination task. In both tasks, ERP differences related to threshold were temporally localized differences in waveform shape. (SLD)