Verbal problem-solving difficulties in autism spectrum disorders and atypical language development.

Area of Science:

• Neurodevelopmental disorders
• Cognitive psychology
• Speech and language pathology

Background:

• Children with autism spectrum disorders (ASDs) exhibit challenges in verbal problem-solving, specifically on the Twenty Questions Task (TQT).
• Difficulties on the TQT are often linked to executive dysfunction but also observed in deaf children, suggesting a role for language development.
• This study investigates the impact of language history on problem-solving strategies in ASD.

Purpose of the Study:

• To compare the Twenty Questions Task (TQT) performance of children with high-functioning autism (HFA), Asperger syndrome (AS), and typically developing (TD) children.
• To examine the contribution of language history to problem-solving deficits in ASD.
• To explore potential explanations for differences in verbal problem-solving skills, including inner speech and visual strategies.

Main Methods:

• Comparative analysis of TQT performance across three groups: HFA, AS, and TD children.
• Assessment of question understanding, planning abilities, and verbal fluency.
• Exploration of potential cognitive and linguistic factors influencing strategy use.

Main Results:

• Children with high-functioning autism (HFA) employed significantly less efficient strategies on the TQT compared to both Asperger syndrome (AS) and typically developing (TD) children.
• No significant group differences were found in question understanding, planning, or verbal fluency.
• The findings suggest that specific aspects of verbal problem-solving are uniquely impaired in HFA.

Conclusions:

• Verbal problem-solving deficits in HFA may not solely stem from executive dysfunction or general language impairments.
• Atypical development of inner speech or a reliance on visual strategies could underlie the observed TQT performance differences in ASD.
• Further research is needed to elucidate the precise mechanisms contributing to impaired verbal problem-solving in autism spectrum disorders.