Relevant features of letter-like forms were emphasized visually or verbally. Results indicated visual emphasis facilitated identification of variations of the forms. (ST)

Conducted two experiments which employed discrimination learning methods to test predictions related to the difficulty of discrimination of lateral reversals and of inversions when shapes are presented: (1) successively, (2) simultaneously in lateral alignment, and (3) simultaneously in vertical alignment. Subjects were 6-year-old children. (SDH)

Four experiments assessed converging aspects of four-month-old infants' perceptions of visual patterns. Results together corroborate and extend previous findings that vertical symmetry has a special status in early perceptual development and that infants can perceive pattern wholes. (Author/AS)

In a study of oddity performance, subjects were required to choose one distinct bimodal stimulus from a display that included other stimuli that did not differ from each other. Oddity performance was evaluated with both reversal assessments and assessments with new stimuli. The usefulness of bimodal training in oddity learning was demonstrated.…

Two experiments explored the nature of perceptual development in 5- and 10-year olds and adults. The primary finding was that preassessed salience significantly influenced 5-year olds' ability to discriminate two objects, while salience did not affect 10-year olds' or adults' response times. Results showed that salience effects in perceptual…