The Attention-Deficit/Hyperactivity Disorder Test (ADHD-T) is a normreferenced assessment that contributes to the diagnosis of children and young people with ADHD. Designed for use in schools and clinics, the test is easily completed by teachers, parents, and others who are knowledgeable about the referred individual.

Based on the diagnostic criteria for Attention-Deficit/Hyperactivity Disorder of the DSM-IV, the ADHD-T contains 36 items that describe characteristic behaviours of persons with Attention-Deficit/Hyperactivity Disorder. These items comprise three subtests representing the core symptoms necessary for the diagnosis of ADHD: hyperactivity, impulsivity, and inattention.

The test is useful for screening and clinical assessment in schools, clinics, and private practices and also can be used for evaluating treatment strategies and in research projects.