a1 Department of Psychology, University of Reading and Faculty of Health, Leeds Metropolitan University
a2 Department of Psychology, University of Reading
Ten mothers were observed prospectively, interacting with their infants aged 0 ; 10 in two contexts (picture description and noun description). Maternal communicative behaviours were coded for volubility, gestural production and labelling style. Verbal labelling events were categorized into three exclusive categories: label only; label plus deictic gesture; label plus iconic gesture. We evaluated the predictive relations between maternal communicative style and children's subsequent acquisition of ten target nouns. Strong relations were observed between maternal communicative style and children's acquisition of the target nouns. Further, even controlling for maternal volubility and maternal labelling, maternal use of iconic gestures predicted the timing of acquisition of nouns in comprehension. These results support the proposition that maternal gestural input facilitates linguistic development, and suggest that such facilitation may be a function of gesture type.
(Received May 01 2007)
(Revised January 29 2009)
(Accepted October 07 2009)
(Online publication March 10 2010)
[*] The research described in this paper was supported by an ESRC doctoral studentship grant (No R42200134423) to the first author.