Executive functioning and neurodevelopmental disorders in early childhood: a prospective population-based study

Area of Science:

• Neurodevelopmental disorders
• Child psychology
• Cognitive neuroscience

Background:

• Executive functioning deficits are prevalent in children with neurodevelopmental disorders.
• Previous research primarily studied clinical populations using cross-sectional designs, limiting understanding of developmental pathways.
• This study prospectively examines the link between early executive functioning and later autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) traits.

Purpose of the Study:

• To investigate the prospective association between executive functioning at age 4 and subsequent ASD and ADHD traits.
• To determine if executive functioning deficits predict the development of ASD and ADHD traits in early childhood.

Main Methods:

• Utilized data from the Generation R Study, a general population birth cohort.
• Assessed parent-reported executive functioning at age 4 using the Brief Rating Inventory of Executive Function-Preschool Version.
• Measured ASD traits at age 6 and ADHD traits at age 7 using parent and teacher reports, with clinical diagnoses confirmed via medical records and interviews.

Main Results:

• Impaired executive functioning was significantly associated with increased ASD and ADHD traits and diagnoses.
• Deficits across all executive functioning subdomains correlated with higher ASD traits.
• Impaired inhibition, working memory, and planning/organization were specifically linked to increased ADHD traits.

Conclusions:

• Executive functioning difficulties show a graded association with ASD and ADHD traits along their respective continuums.
• Early executive functioning problems may serve as a precursor to the development of ASD and ADHD traits.