Results of an experiment using perception and discrimination learning tests showed that, in children, perception is affected by labels, perceptual learning, and selective attention. These effects are determined developmentally. As age increases, the effects of verbal clues decrease and those of perceptual clues increase. (PMJ)

A preliminary experiment was conducted to explore the effects of illiteracy on hemispheric specialization. Groups of literate and illiterate Iranian children were tested on three dichotic tapes consisting of monosyllabic animal names, double-digit numbers, and nonverbal environmental sounds. All children were also tested for handedness and for…