Controlling for stimulus dominance effects in the Fused Dichotic Words Test when predicting speech lateralization in children |
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Authors: | Fernandes M A Smith M L |
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Affiliation: | University of Toronto at Mississauga, Canada. |
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Abstract: | A log-linear analysis (Grimshaw et al., 1994) of Fused Dichotic Words Test data was examined in a sample of 28 children with epilepsy who had undergone the intracarotid amobarbital procedure to determine the nature of speech representation. The analysis yields a measure of ear dominance (lambda*) that controls for stimulus dominance confounds. Most patients with unilateral speech obtained statistically significant ear advantages, whereas most with bilateral speech displayed no significant ear advantage. Despite controlling for stimulus dominance confounds, some of the scores from patients with left-hemisphere speech overlapped with those from patients with bilateral speech representation. |
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