Analysis of distributions reveals real differences on dichotic listening scores between left- and right-handers

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

Fersiynau electronig

Dogfennau

  • Karlsson_etal_DLdistributions_final no figures

    Llawysgrif awdur wedi’i dderbyn, 280 KB, dogfen-PDF

    Embargo yn dod i ben: 31/12/99

    Trwydded: CC BY Dangos trwydded

  • tgad009

    Fersiwn derfynol wedi’i chyhoeddi, 627 KB, dogfen-PDF

    Trwydded: CC BY Dangos trwydded

Dangosydd eitem ddigidol (DOI)

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.

Iaith wreiddiolSaesneg
Tudalennau (o-i)tgad009
CyfnodolynCerebral Cortex Communicaitons
Cyfrol4
Rhif y cyfnodolyn2
Dyddiad ar-lein cynnar1 Meh 2023
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 12 Meh 2023

Cyfanswm lawlrlwytho

Nid oes data ar gael
Gweld graff cysylltiadau