The Development of Coordinated Communication in Infants at Heightened Risk for Autism Spectrum Disorder
Meaghan V Parladé1, Jana M Iverson
1Department of Psychology, Center for Autism and Related Disabilities, University of Miami, P.O. Box 248768, 5665 Ponce de Leon Boulevard, Coral Gables, Miami, FL, 33124-0725, USA, mparlade@miami.edu.
Insights
Infants later diagnosed with Autism Spectrum Disorder (ASD) show slower development in social communication coordination, particularly in gestures and vocalizations. This early disruption may impact later social and language skills.
Area of Science:
- Developmental psychology
- Pediatric neurology
- Clinical psychology
Background:
- Early detection of Autism Spectrum Disorder (ASD) is crucial for timely intervention.
- Social communication development, including gesture-vocalization coordination, is a key area affected in ASD.
- Understanding early developmental trajectories can differentiate infants at risk for ASD.
Purpose of the Study:
- To examine developmental changes in social communication coordination in infancy.
- To differentiate infants who develop ASD from those who do not, based on early communication patterns.
- To investigate the impact of gesture-vocalization coordination on later development.
Main Methods:
- Prospective longitudinal study design.
- Comparison of infants at heightened risk for ASD (diagnosed with ASD, language delay, or no diagnosis) and low-risk infants.
- Hierarchical linear modeling analyses to assess growth trajectories.
Main Results:
- Infants diagnosed with ASD exhibited significantly slower overall growth in communication coordinations.
- Slower development was also observed in gestures coordinated with vocalizations in ASD infants.
- Even compared to high-risk infants with language delay, ASD infants showed delayed coordination development.
Conclusions:
- Disrupted development of gesture-vocalization coordination is an early indicator differentiating ASD.
- This early disruption may have cascading negative effects on subsequent social and linguistic development.
- Early identification of coordination deficits can inform targeted interventions for infants at risk for ASD.
Abstract:
This study evaluated the extent to which developmental change in coordination of social communication in early infancy differentiates children eventually diagnosed with ASD from those not likely to develop the disorder. A prospective longitudinal design was used to compare nine infants at heightened risk for ASD (HR) later diagnosed with ASD, to 13 HR infants with language delay, 28 HR infants with no diagnosis, and 30 low risk infants. Hierarchical linear modeling analyses revealed that ASD infants exhibited significantly slower growth in coordinations overall and in gestures coordinated with vocalizations, even relative to HR infants with language delay. Disruption in the development of gesture-vocalization coordinations may result in negative cascading effects that adversely impact later social and linguistic development.
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