Early Lateralization of Gestures in Autism: Right-Handed Points Predict Expressive Language

Children with autism spectrum disorder (ASD) produce fewer deictic gestures, accompanied by delays/deviations in speech development, compared to typically-developing (TD) children. We ask whether children with ASD-like TD children-show right-hand preference in gesturing and whether right-handed gestures predict their vocabulary size in speech. Our analysis of handedness in gesturing in children with ASD (n = 23, M.sub.age = 30-months) and with TD (n = 23, M.sub.age = 18-months) during mother-child play showed a right-hand preference for TD children-but not for children with ASD. Nonetheless, right-handed deictic gestures predicted expressive vocabulary 1 year later in both children with ASD and with TD. Handedness for gesture, both hand preference and amount of right-handed pointing, may be an important indicator of language development in autism and typical development.
Author(s): Nevena Dimitrova [sup.1] [sup.3] , Christine Mohr [sup.2] , Seyda Özçaliskan [sup.3] , Lauren B. Adamson [sup.3] Author Affiliations: (1) HETS&Sa Vaud (HES-SO), , Ch. des Abeilles 14, 1010, [...]