ABSTRACT
Attention-deficit/hyperactivity disorder (ADHD) is characterized by developmentally inappropriate levels of inattention, overactivity, and impulsivity, resulting in significant impacts on various areas of daily life functioning (e.g., family interactions, peer relationships, academic achievement). According to the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5; American Psychiatric Association [APA], 2013) criteria for ADHD in youth require the presence of several inattentive or hyperactive/impulsive symptoms occurring prior to 12 years of age, in at least two settings, and interfering with or reducing the quality of social, academic, or occupational functioning. DSM-5 defines ADHD as consisting of three types: combined presentation, predominantly inattentive presentation, and predominantly hyperactive/impulsive presentation. In addition, DSM-5 requires specification of the severity of ADHD (i.e., mild, moderate, or severe).
