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Pubmed for Handhelds

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  • Title: Verbal-manual time sharing in children as a function of task priority.
    Author: Hiscock M.
    Journal: Brain Cogn; 1982 Jan; 1(1):119-31. PubMed ID: 6927550.
    Abstract:
    Eighty-three normal, right-handed children performed unimanual finger tapping recitation of a tongue twister, and both tasks concurrently. Trade-offs in dual-task performance were measured as the priority assigned to each task was manipulated. Irrespective of task priority, speaking interfered to a greater degree with right-hand tapping than with left-hand tapping, but the effect of tapping upon verbal production and speech errors was not lateralized. The asymmetric effect of speech upon tapping, which was seen in 85.5% of the children, cannot be attributed to the disparity between hands in baseline tapping rate. The findings suggest that time-sharing asymmetry reflects cerebral lateralization of speech, but only some of the results would be predicted on the basis of a functional distance principle of cerebral organization.
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