2.2.2. Swanson, Nolan, and Pelham, Version IV Questionnaire for ADHD and ODD

The Swanson, Nolan, and Pelham, Version IV questionnaire (SNAP-IV) consists of the following items: inattention, hyperactivity/impulsivity, and oppositional symptoms. These items reflect the core symptoms of ADHD and Oppositional Defiant Disorder (ODD) as defined in the DSM-IV. A study of the psychometric properties of the Chinese version of the SNAP-IV in Taiwan showed that the intraclass correlation coefficients for the three subscales of this scale ranged from 0.59 to 0.72 for the parent form and 0.60 to 0.84 for the teacher form. All subscales of the parent and teacher forms showed excellent internal consistency with Cronbach’s α values of >0.88 [26].