Behavioral Assessment of Core ADHD Symptoms Using the QbTest

Area of Science:

• Neuropsychology
• Child Psychology
• Psychometrics

Background:

• Hyperactivity, a core symptom of ADHD, is often overlooked in childhood ADHD assessments.
• The Quantified behavior Test (QbTest) aims to assess all three core ADHD symptoms behaviorally.

Purpose of the Study:

• To examine the factor structure of the QbTest.
• To evaluate the concurrent and discriminant validity of the QbTest in children.

Main Methods:

• Exploratory factor analysis was conducted on a sample of 828 children.
• A Multi-Trait-Multi-Method (MTMM) approach was used for validity analyses in a separate sample of 102 children.

Main Results:

• A three-factorial model explained 76% of the variance, with factors influenced by age and gender.
• Discriminant validity of the QbTest was promising, but concurrent validity findings were inconsistent when compared to another attention test and rating scales.

Conclusions:

• The QbTest may be a valuable tool for the behavioral assessment of childhood ADHD.
• Further studies are required to fully establish the psychometric quality and clinical utility of the QbTest.