Gender comparisons in children with ASD entering early intervention

Area of Science:

• Developmental Psychology
• Neurodevelopmental Disorders
• Pediatric Health

Background:

• Autism Spectrum Disorder (ASD) is diagnosed approximately four times more often in males than females.
• Concerns exist regarding the potential under-diagnosis of females with ASD and the consequences of under-identification.
• Previous research on gender differences in early childhood ASD has yielded inconsistent findings.

Purpose of the Study:

• To investigate gender differences in social, communication, and cognitive functioning in young children with ASD.
• To examine differences in ASD symptom levels between genders in a clinical sample.
• To inform understanding of gender bias in ASD diagnosis and its underlying mechanisms.

Main Methods:

• A cohort of 254 children (42 females), aged 29-74 months, were assessed upon entering early intervention.
• Measures included cognition, communication skills, adaptive behavior, and ASD symptom severity.
• Participants were analyzed overall and stratified by functioning level.

Main Results:

• No significant gender differences were observed in overall functioning or when analyzed by functioning level.
• Contrary to predictions, similar ratios of males and females were found in both high- and low-functioning groups.
• Findings suggest gender differences may not be apparent in clinical samples of very young children.

Conclusions:

• Results align with prior research indicating a lack of apparent gender differences in early clinical ASD samples.
• Further research using universal screening or longitudinal methods is recommended to understand female ASD developmental trajectories.
• Improved understanding can inform timely and tailored interventions for preschool-aged females with ASD.