This report investigates perceptual functioning in the kindergarten first-grade period for slow- and average-maturing children. Two sets of auditory and visual tasks were devised: (1) identifying the first of an ordered pair of lights or tones when speed of presentation was a factor, and (2) categorizing each stimulus signal either by a uni- or…

Fifty-four kindergarten children were screened with the Sapir Developmental Scale to highlight deficiencies in bodily schema, perceptual motor skills, and language development, and were matched in groups of three by score, chronological age, and sex with one of the three acting as control. Three first grade classes were organized as follows: one…