ArticleCerebral cortex communications2023
Analysis of distributions reveals real differences on dichotic listening scores between left- and right-handers.
Article in Cerebral cortex communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Language laterality and cognitive skills: does anatomy matter?Cerebral cortex (New York, N.Y. : 1991) · 2026Article
- Handedness in schizophrenia and affective disorders: a large-scale cross-disorder study.European archives of psychiatry and clinical neuroscience · 2025Article
- Brain Laterality in Dyslexia Seen during Literacy Development and Early Training.Brain sciences · 2024Article
- Clinical implications of brain asymmetries.Nature reviews. Neurology · 2024Review
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4 authors.
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Abstract
About 95% of right-handers and 70% of left-handers have a left-hemispheric specialization for language. Dichotic listening is often used as an indirect measure of this language asymmetry. However, while it reliably produces a right-ear advantage (REA), corresponding to the left-hemispheric specialization of language, it paradoxically often fails to obtain statistical evidence of mean differences between left- and right-handers. We hypothesized that non-normality of the underlying distributions might be in part responsible for the similarities in means. Here, we compare the mean ear advantage scores, and also contrast the distributions at multiple quantiles, in two large independent samples (Ns = 1,358 and 1,042) of right-handers and left-handers. Right-handers had an increased mean REA, and a larger proportion had an REA than in the left-handers. We also found that more left-handers are represented in the left-eared end of the distribution. These data suggest that subtle shifts in the distributions of DL scores for right- and left-handers may be at least partially responsible for the unreliability of significantly reduced mean REA in left-handers.
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