Are children diagnosed with the combined form of ADHD pervasively hyperactive?

Diagnostic criteria specified by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR ; American Psychological Association [APA], 2000) require that motor excess be present across situations, at home and school, in order to establish that this condition is a characteristic of the child. The article discusses a study whose primary purpose was to use actigraphy to validate teacher and parent reports of hyperactivity at home and school. Continuous activity measurements were recorded for each minute of each 24-hr period (1,440 measurements per child per day) for a full 7-day week, during school and at home, on 9 children clinically diagnosed with the combined form of ADHD and 9 control children clinically examined at the same community mental health clinic and determined not to meet diagnostic criteria. The article highlights that the children with ADHD had not yet started medication, and the study findings reveal that only 1 of 9 children diagnosed with the combined form of ADHD was measurably pervasively hyperactive as DSM-IV-TR inclusion criteria require. Implications are discussed.