Examined adult age differences in the effects of perceptual grouping on attentional performance. All three age groups were slowed by the presence of similar irrelevant information, but the elderly were slowed more than were the young adults. (Author)

This study explored the effect of grade level and sex on affective ratings of color and black-and-white pictures by having 148 students from grades 4, 7, and 12 rate color and black-and-white slides on nine semantic differential scales. (JEG)

Two experiments investigated the process by which children encode briefly presented spatial positions. First, third, and fifth graders were asked to judge whether a test dot occupied the same position on a card as any one of a number of dots which had been presented tachistoscopically. (JMB)

The ability of young infants between the ages of 8 and 17 weeks to perceive outline shapes was investigated in nine experiments using an habituation paradigm. (JMB)

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)