Attention-deficit/hyperactivity disorder (AD/HD) is a common psychiatric disorder, characterized by inattention and/or hyperactivity and impulsivity, which are considered extreme for an individual’s developmental level. According to the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV) diagnostic criteria for AD/HD, there are three main subtypes: combined type, predominately inattentive type, and predominately hyperactive-impulsive type. The estimated prevalence of AD/HD for school-aged children is 3–7%, with males more commonly affected than females (Albayrak et al., 2008; Wallis et al., 2008).
