Asperger's syndrome and high-functioning autism: language, motor and cognitive profiles

Area of Science:

• Neurodevelopmental Disorders
• Child Psychology
• Pediatric Neurology

Background:

• Asperger syndrome (AS) and high-functioning autism (HFA) are distinct diagnoses within pervasive developmental disorders.
• Understanding the cognitive, motor, language, and psychosocial profiles is crucial for accurate diagnosis and intervention.

Purpose of the Study:

• To compare cognitive, motor, language, and psychosocial functioning in children with AS and HFA.
• To investigate the validity of the distinction between AS and HFA based on observed differences and similarities.

Main Methods:

• A cohort of 57 children with AS and 55 with HFA (mean age 10 years, full-scale-IQ ≥ 80) were assessed.
• Standardized test batteries evaluated cognitive (verbal and performance IQ), language, and motor skills.
• Parental reports on early language development and psychosocial adaptation were collected.

Main Results:

• Children with AS exhibited higher full-scale-IQ and verbal-IQ than those with HFA; performance-IQ was comparable.
• At age 10, AS children showed better language skills, yet 30% had receptive language problems.
• Motor problems (approx. 50%) and reduced psychosocial adaptation were similar in both groups.

Conclusions:

• The observed language difficulties in AS children at age 10, alongside comparable motor and psychosocial challenges, question the current diagnostic separation of AS and HFA.
• The findings suggest a potential overlap or continuum between these conditions, necessitating a re-evaluation of their distinctiveness within pervasive developmental disorders.