BACKGROUND Children with attention-deficit/hyperactivity disorder (ADHD), a common, impairing neuropsychiatric disorder, are more likely to have difficulties planning and organizing. They cannot do things in an efficient way, cannot feel the limit of time schedule, and have difficulties awaiting their turns (Barkley, 1998). They often spend much longer time in homework, forget to accomplish routines or prescheduled work. Such behaviors often result in conflicts in the parent-child relationship.