Abstract
Normal, right-handed children between the ages of 3 and 12 yr engaged in unimanual finger tapping with and without concurrent speech. Cross-sectional data from 155 children showed that vocalization disrupted right-hand tapping more than left-hand tapping, and that the degree of asymmetry did not vary with age. These results support the developmental invariance hypothesis of language lateralization. Longitudinal data for 115 children likewise failed to show any increase in performance asymmetry over a 1-yr interval. Group data are stable over time, but the unreliability of individual asymmetry scores militates against the use of time-sharing asymmetry as an index of individual differences in speech lateralization.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
