Relationship Between Motor Skills and Language Abilities in Children With Autism Spectrum Disorder.

Objectives: Few studies have examined the relationship between language abilities and specific motor skills in toddlers with autism spectrum disorder (ASD). The aim of this study was to compare the relationship of receptive language (RL) and expressive language (EL) abilities with motor functioning in toddlers with ASD aged 24 to 36 months and their peers with typical development (TD). Furthermore, the study compared multidimensional motor functioning in toddlers with ASD with delayed RL and EL development and toddlers with ASD and typical RL and EL development. The predictive powers of the motor skills were examined for the group with delayed RL and EL development.

Methods: The language abilities of 38 toddlers with ASD and 38 age-matched toddlers with TD were evaluated using the Receptive and Expressive Language Subscales of the Mullen Scale of Early Learning, and their motor skills were assessed using the Peabody Developmental Motor Scales, Second Edition.

Results: Significant correlations between language ability and motor functioning were observed in the ASD and TD groups. The ASD group with delayed RL and EL development had lower scores for multidimensional motor functioning than the ASD group with typical RL and EL development and the TD group. Moreover, the risks of delayed EL and RL development could be predicted by the lower motor scores in toddlers with ASD.

Conclusions: The positive correlation between language abilities and motor functioning in toddlers with ASD indicated potential connections between the early onsets of motor and speech-language impairments in these toddlers.

Impact: The results may have implications for the development of motor-based interventions targeting language development in young children with ASD.