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  • Title: Dichotic listening in 126 left-handed children: ear advantages, familial sinistrality and sex differences.
    Author: Hugdahl K, Andersson B.
    Journal: Neuropsychologia; 1989; 27(7):999-1006. PubMed ID: 2771038.
    Abstract:
    In the present study we report data on dichotic listening (DL) performance in 126 left-handed children. Four specific questions were addressed: (1) What is the percentage of left-handers in a large sample of children in Sweden? (2) What is the distribution of children showing a right ear (REA), left ear (LEA), and no ear (NEA) advantage in DL? (3) What is the relationship between ear advantage and familial sinistrality in children? (4) Are there sex differences among left-handed children, and if so, are these differences also reflected in DL performance? The results showed that the left-handers constituted 8.1% of the total sample of the screened subjects. The DL results showed 65.0% REA, 25.4% LEA, and 9.6% NEA. Of the subjects, 45.2% had left-handed relatives. Overall, there were more boys than girls in the sample (65.1% vs 34.9%). It is concluded that the present data match the sodium-Amytal data on left-handed adults with about 2/3 of a left-handed population with left hemisphere language dominance.
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