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Measuring dyspraxia in autism using a five-minute praxis exam

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ELSEVIER SCI LTD
DOI: 10.1016/j.rasd.2023.102200

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Autism spectrum disorder; Praxis; Motor skills; Nonverbal communication; Imitation; Adaptive behavior skills

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This study tested the feasibility of a brief praxis assessment method for individuals with autism. The results showed that individuals with autism had significant difficulties in praxis, making more errors compared to typically developing individuals. The findings suggest that this shortened assessment method can effectively capture developmental issues in individuals with autism.
Background: Difficulties with praxis, the ability to perform learned skilled movements, have been robustly demonstrated in autism spectrum disorder (autism). However, praxis assessment is not routinely included in autism characterization batteries, in part because it is traditionally time consuming to administer and score. We test whether dyspraxia in autism can be captured with a brief measure. Method: Youth with autism (n = 41) and matched typically developing controls (n = 32), aged 8-16 years, completed a 5-min praxis battery. The 19-item battery included four subtests: gesture to command, tool use, familiar imitation, and meaningless imitation. Video recordings were coded for error types and compared to participant characterization variables. Results: Consistent with research using a lengthy battery, autistic youth made more errors overall, with a large effect size. Groups demonstrated similar distributions of error types, suggesting that dyspraxia in autism is not limited to a particular error form. In the autism group, praxis was associated with adaptive functioning, but not autism traits. Conclusions: A shortened battery is sufficiently sensitive to praxis differences between autistic and typically developing youth, increasing the feasibility of including praxis within clinical assessments or larger research batteries aimed at testing relationships with downstream skills.

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