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Publication . Article . 2009

Relationship between manual preferences for object manipulation and pointing gestures in infants and toddlers

Handedness for object manipulation and pointing
Jacques Vauclair; Juliette Imbault;
Closed Access  
Published: 28 May 2009 Journal: Developmental Science, volume 12, pages 1,060-1,069 (issn: 1363-755X, Copyright policy )
Publisher: Wiley
Abstract
The aim of this study was to measure the pattern of hand preferences for pointing gestures as a function of object-manipulation handedness in 123 infants and toddlers (10-40 months). The results showed that not only right-handers but also left-handers and ambidextrous participants tended to use their right hand for pointing. There was a significant correlation between manual preferences and pointing lateralization. Further analyses showed that the correlation between these two indexes was at its strongest during two key phases of language development (i.e. vocabulary spurt and syntax improvement) and weakened to become nonsignificant in the interim. These findings support the view that humans have a specialized area for communicative gestures and language in the left cerebral hemisphere that may be independent of the system controlling the purely motor functions of hand use.
Subjects by Vocabulary

Microsoft Academic Graph classification: Vocabulary media_common.quotation_subject media_common Developmental psychology Psychology Lateralization of brain function Syntax Language development Poison control Gesture Nonverbal communication Language acquisition

Subjects

Cognitive Neuroscience, Developmental and Educational Psychology