Preschool Inhibitory Control Predicts ADHD Group Status and Inhibitory Weakness in School

Area of Science:

• Child Psychology
• Neurodevelopmental Disorders
• Clinical Assessment

Background:

• Attention-Deficit/Hyperactivity Disorder (ADHD) is a prevalent neurodevelopmental disorder.
• Inhibitory control is a key executive function often impaired in ADHD.
• Accurate assessment of inhibitory control is crucial for diagnosis and intervention in young children.

Purpose of the Study:

• To evaluate the discriminative utility of performance-based measures of inhibitory control in preschool children.
• To determine if these performance measures enhance diagnostic prediction of ADHD.
• To assess their ability to predict day-to-day executive function ratings from caregivers.

Main Methods:

• A cohort of 105 preschool children (ages 4-5) participated, with 54 diagnosed with ADHD (medication-naïve).
• Participants completed performance measures assessing inhibitory control, including the Auditory Continuous Performance Test for Preschoolers, Conflicting Motor Response Test, and NEPSY Statue.
• Caregiver (parent and teacher) ratings of inhibition were collected using the Behavior Rating Inventory of Executive Function-Preschool version.

Main Results:

• Both performance measures and caregiver reports of inhibitory control significantly predicted ADHD group status.
• Performance measures did not improve ADHD group prediction beyond parent reports.
• Performance measures significantly predicted classroom inhibitory control (teacher ratings), even when accounting for parent reports.

Conclusions:

• Performance measures of inhibitory control demonstrate adequate predictive utility for ADHD status in preschoolers.
• These measures are effective predictors of classroom-based inhibitory control.
• Performance measures hold utility as valuable components within clinical assessments for young children.