One hundred and sixty subjects ages 7, 9, 11 and 21 years judged the standard Brentano form and a dot form of the illusion of 5 trials at 30 second intervals. (LLK)

Children and adults performed a divided attention task and two selective attention tasks with shapes that were either spatially integrated or separated. Results indicate that integrated stimuli are initially perceived as wholes, and separated stimuli as features, at all ages. (BC)

Ancient philosophers, such as Plato and Euclid, believed in an extramission theory of visual perception, which held that there are emissions from the eyes during the act of vision. Three studies, comparing college and elementary school students, found a decrease over age in the belief in extramission and an increase in the belief that vision…

This study was designed to provide evidence concerning hemispheric independence in the visual modality of children and adults. Words and letters were shown either singly or in pairs. Hemispheric independence occurred more frequently among children when letters, as opposed to words, were shown. Results are discussed in terms of developmental models…

Investigates age differences in selective attention in a coded visual search task where subjects were given different types of information about target location before trial onset. (Author/SS)

Revises an earlier experiment that revealed age-related increases in sensitivity to rhythmic information when judging the difference between a theme and selected pitch and rhythm variations. Tested the possibility that the developmental differences found earlier were due to characteristics of the test melody. Results supported the earlier study.…