A Novel Assessment Tool for Impulsive Aggression in Children with Attention-Deficit/Hyperactivity Disorder

Area of Science:

• Child Psychology
• Neurodevelopmental Disorders
• Psychometric Assessment

Background:

• Impulsive aggression (IA) is a significant concern in children with Attention-Deficit/Hyperactivity Disorder (ADHD).
• Existing measurement tools may not adequately capture the frequency of IA behaviors in this population.
• A reliable and valid diary is needed for clinical and research purposes.

Purpose of the Study:

• To establish the validity and reliability of a provisional 30-item impulsive aggression (IA) diary for children aged 6-12 years with ADHD.
• To refine the diary into a psychometrically sound measurement tool for IA behavior frequency.

Main Methods:

• Administered a 30-item IA diary to parents of 103 children with ADHD and IA symptoms for 14 days.
• Utilized inter-item correlations, exploratory factor analysis (EFA), and item response theory (IRT) modeling.
• Assessed internal consistency, test-retest reliability (TRT), and concurrent validity with established measures (R-MOAS, Nisonger Child Behavior Rating Form).

Main Results:

• A final 15-item IA diary was developed, yielding a Total Behavioral Frequency Score (TBFS).
• High internal consistency (marginal reliability = 0.86, α = 0.73) and good test-retest reliability (ICC = 0.8) were found for the TBFS.
• The TBFS demonstrated concurrent validity with the R-MOAS (r = 0.49–0.62).

Conclusions:

• The final 15-item IA diary is a reliable and psychometrically validated instrument.
• This tool enables clinicians and researchers to accurately assess the frequency of impulsive aggression in children with ADHD.
• The validated diary facilitates improved understanding and management of IA behaviors in pediatric ADHD.