Hemispheric specialization for speech perception in four-year-old children from low and middle socio-economic classes.
Four-year-old male and female children from low and middle socio-economic class (SEC) were presented a dichotic syllable task. Both low and middle SEC males evidenced significant right-ear advantages. Neither low nor middle SEC females evidenced a significant right-ear advantage. The similar ear advantage in the low and middle SEC populations replicates a previous study with six-year-olds and suggests that the variations in rearing conditions which occur in low and middle SEC classes does not affect hemispheric lateralization for speech perception.
D001307:Auditory Perception / Q000502:physiology*; D002675:Child, Preschool; D004292:Dominance, Cerebral; D005260:Female; D006801:Humans; D008297:Male; D012919:Social Behavior; D013060:Speech