Affiliations:
University of British Columbia, Canada
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University of Alberta, Canada
Correspondence:
[*]
Address for correspondence Elena Nicoladis, Department of Psychology, University of British Columbia, 1147 Research Road, Kelowna BC V1 V 1V7, Canada. E-mail: elena.nicoladis@ubc.ca
Abstract: Adults, preschool children, and infants gesture more with their right hand than with their left hand. Since gestures and speech are related in production, it is possible that this right-hand preference reflects left-hemisphere lateralization for gestures and speech. The primary purpose of the present study was to test if children between the ages of 6 and 10 years show a right-hand preference in referential gestures while telling a story. We also tested four predictors of children’s degree of right-hand preference: 1) bilingualism, 2) language proficiency, 3) age, and 4) sex. Previous studies have shown that these variables are related to the degree of speech lateralization. Twenty-five English monolingual (17 girls; Mage = 8.0, SDage = 1.4), 21 French monolingual (12 girls; Mage = 7.3, SDage = 1.4,) and 25 French-English bilingual (11 girls; Mage = 8.5, SDage = 1.4) children watched a cartoon and told the story back. The bilinguals did this once in each language. The referential gestures were coded for handedness. Most of the participants showed a right-hand preference for gesturing. In English, none of the predictor variables was clearly related to right-hand preference. In French, the monolinguals showed a stronger right-hand preference than the bilinguals. These inconsistent findings across languages raise doubts as to whether the right-hand preference is linked to lateralization for speech.
Keywords: Hand preference, lateralization, co-speech gestures, referential gestures
