Participants were 173 children (aged 6-17 years) with DSM-IV bipolar disorder. Participants were comprehensively assessed using structured diagnostic interviews (Schedule for Affective Disorders and Schizophrenia for School-Age Children) and neuropsychological measures (eg, subtests of the Wechsler Intelligence Scale for Children-III and Wechsler Adult Intelligence Scale-III) during the years 2001-2006