Developmental Profile in Children Aged 3-6 Years: Down Syndrome vs. Autism Spectrum Disorder

Area of Science:

• Developmental Psychology
• Neurodevelopmental Disorders
• Pediatric Health

Background:

• Autism Spectrum Disorder (ASD) and Down Syndrome (DS) are distinct neurodevelopmental conditions.
• Understanding their unique developmental trajectories is crucial for early intervention and support.
• Limited research directly compares the developmental profiles of children with ASD and DS within the same age range.

Purpose of the Study:

• To compare the developmental profiles of children aged 3-6 years with ASD and DS.
• To identify commonalities and distinctions in developmental milestones between ASD and DS.
• To investigate the relationship between motor skills, communication, and cognitive abilities in these populations.

Main Methods:

• A cohort of 43 children (23 with DS, 20 with ASD) aged 3-6 years participated.
• Standardized assessments included the Battelle Developmental Inventory, Reynell Developmental Language Scales III, and NEPSY-II.
• Evaluations focused on cognitive, language, motor, and neuropsychological functions.

Main Results:

• Children with ASD demonstrated superior fine motor, gross motor, and communication skills compared to children with DS.
• ASD group showed higher language comprehension and expressive language scores than the DS group.
• Significant correlations were observed between motor skills and communication abilities in both groups.

Conclusions:

• Children with ASD and DS exhibit distinct developmental patterns, particularly in motor and communication domains.
• Findings suggest a dissociation between cognition and language in ASD, impacting adaptive functioning.
• This comparative analysis provides valuable insights for tailored interventions for children with ASD and DS.