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Walking Ability is Associated with Social Communication Skills in Infants at High Risk for Autism Spectrum Disorder
Jessica Bradshaw1, Cheryl Klaiman1, Scott Gillespie1
1Marcus Autism Center, Children's Healthcare of Atlanta, Department of Pediatrics, Emory University School of Medicine.
Insights
Early walking in high-risk infants may boost social-communication skills, unlike in typically developing babies. Motor milestones can signal developmental delays and guide interventions for autism spectrum disorder (ASD).
Area of Science:
- Developmental Psychology
- Pediatrics
- Neuroscience
Background:
- Motor and social deficits are early indicators in infants later diagnosed with autism spectrum disorder (ASD).
- Early motor milestones are crucial for developing social interaction and communication skills in infants.
- Infant siblings of children with ASD are at heightened risk for developmental delays.
Purpose of the Study:
- To investigate the association between motor skills (walking ability) and social-communication development in 12-month-old infants at high and low risk for ASD.
- To compare social-communication and cognitive skills across different walking groups (walkers, standers, pre-walkers) in high-risk and low-risk infants.
Main Methods:
- Study included 86 high-risk infants (siblings of children with ASD) and 113 low-risk, typically developing infants.
- Infants were categorized into walkers, standers, or pre-walkers based on independent mobility.
- Social-communication and cognitive skills were assessed using the Communication and Symbolic Behaviors Scales (CSBS) and Mullen Scales of Early Learning.
Main Results:
- High-risk infants who could walk independently demonstrated superior social-communication skills compared to high-risk pre-walkers.
- Cognitive skills were comparable between high-risk walkers and pre-walkers.
- In low-risk infants, social-communication and cognitive skills were similar across walking statuses.
Conclusions:
- Independent walking in high-risk infants may promote the development of social-communication abilities.
- Motor milestones, such as walking, can serve as early indicators of potential social-communication delays in infants.
- Targeting motor development may be a viable intervention strategy for improving social-communication skills in at-risk infants.
Abstract:
Achievement of early motor milestones in infancy affords new opportunities for social interaction and communication. Research has shown that both motor and social deficits are observed in infants who later develop autism spectrum disorder (ASD). The current study examined associations between motor and social-communication skills in 12-month-old infant siblings of children with ASD who are at heightened risk for developmental delays (N=86) and low-risk, typically developing infants (N=113). Infants were classified into one of three groups based on their walking ability: walkers (walks independently), standers (stands independently), or pre-walkers (does not yet stand or walk independently). Social-communication and cognitive skills were assessed with two standardized assessments (Communication and Symbolic Behaviors Scales [CSBS] and Mullen Scales of Early Learning) and compared across the three walking groups. Results demonstrated that high-risk walkers showed superior social-communication skills, but commensurate cognitive skills, compared to high-risk pre-walkers. In contrast, social-communication and cognitive skills were largely comparable for low-risk infants, regardless of walking status. Findings suggest that for high-risk infants, who are already vulnerable to developmental delays and ASD, independent walking may facilitate the emergence of social-communication abilities. Pivotal motor milestones may serve as useful indicators of social-communication delays and targets for intervention.
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