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Published on: December 7, 2018
The Unique Roles of Executive Function in Co-Occurring Psychopathologies in Autism.
Shing-Him Ng1, Jet Leung1, Keith Chun Lok Lee1
1Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
Summary
Executive function (EF) helps manage anxiety and attention-deficit/hyperactivity disorder (ADHD) in children with autism spectrum disorder (ASD). Stronger EF may buffer sensory issues linked to anxiety, suggesting EF-targeted interventions for ASD comorbidities.
Area of Science:
- Neuroscience
- Child Psychology
- Psychiatry
Background:
- Autism spectrum disorder (ASD) frequently co-occurs with anxiety and attention-deficit/hyperactivity disorder (ADHD).
- The neurocognitive mechanisms linking these conditions to core ASD symptoms are not well understood.
- Co-occurring conditions significantly impair daily functioning in children with ASD.
Purpose of the Study:
- To investigate the relationships between anxiety, ADHD symptoms, and neurocognitive abilities in children with ASD.
- To determine the role of executive function (EF) in modulating anxiety and ADHD in ASD.
Main Methods:
- A sample of 701 Chinese children with ASD (mean age 8 years) was assessed using the Hong Kong version of the Penn Computerized Neurocognitive Battery.
- Correlations and ordinal regression analyses examined links between cognitive performance, ADHD symptoms, and anxiety.
- Moderation analyses explored the buffering effect of EF on anxiety and sensory symptoms.
Main Results:
- Poorer executive function (EF) independently predicted greater ADHD severity in a dose-dependent manner.
- EF showed a dose-dependent relationship with ADHD severity, independent of core ASD symptoms and IQ.
- Stronger EF buffered the association between sensory issues (hyper-responsiveness/seeking) and anxiety symptoms.
Conclusions:
- Executive function (EF) plays a unique compensatory role in managing anxiety and ADHD in children with ASD.
- Systematic EF assessment can aid in early risk stratification for co-occurring conditions.
- EF-targeted interventions may reduce the impact of ADHD and anxiety in children with ASD.
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