Measures were selected to assess sleep, disruptive behavior, child daytime functioning more generally, and family functioning. An actigraph is worn by the child for one week during each of the four assessment periods, with interpretation aided by the accompanying sleep diary. An Empatica E3 device will be used to assess electro dermal activity (EDA) as a measure of presleep arousal. The child will be asked to wear this device each evening from the start of the bedtime routine through sleep onset, at which point the parent is asked to remove the device.