Development of the Attention-Deficit Hyperactivity Disorder-After School Checklist

Area of Science:

• Child and Adolescent Psychiatry
• Psychometric Instrument Development
• Neurodevelopmental Disorders

Background:

• Attention-Deficit Hyperactivity Disorder (ADHD) significantly impacts children's self-management and interpersonal skills.
• A validated assessment tool is needed to evaluate ADHD's effects in the South Korean context.

Purpose of the Study:

• To develop and validate the Attention-Deficit Hyperactivity Disorder (ADHD)-After School Checklist (ASK).
• To assess ADHD symptom severity and self-management abilities in South Korean children and adolescents.
• To evaluate the scale's reliability and validity.

Main Methods:

• The ASK was developed to measure ADHD psychopathology's impact on self-management and interpersonal impulsivity.
• A study involved 1349 parents in Seoul and Gyeonggi Province, Korea.
• Reliability and validity were assessed using statistical analyses, including principal component analysis and Cronbach's alpha.

Main Results:

• Factor analysis revealed two factors explaining 60.7% of the variance in ASK scores.
• The scale demonstrated good internal consistency (Cronbach's alpha = 0.71) and test-retest reliability.
• Children with ADHD exhibited significantly higher ASK scores than non-ADHD controls (p<0.001).

Conclusions:

• The ASK is a reliable and valid instrument for evaluating ADHD in children and adolescents.
• The checklist effectively assesses self-management capabilities and interpersonal impulsivity.
• Findings support the ASK's utility in academic and daily life contexts for youth with ADHD.