A total of 61 participants (32 male) took part in this study. Demographic details of the sample are presented in Table 1. Participants were recruited from a community-based participant database that contained details of parents who had indicated their availability to be contacted for research participation, and through referral from other participants. Selected participants and their parents were sent a package containing an information sheet, consent form and questionnaires, as well as a reply-paid envelope. Participants completed the questionnaires at their homes and returned them to the researchers, including a statement of informed consent. All participants included in the study were reported to have no diagnosed psychological or medical conditions which affect sleep, cognitive performance or behavior, did not take medications known to affect neuropsychiatric measures, and spoke English as their primary language. The study was approved by the Women’s and Children’s Health Network and the University of South Australia Human Research Ethics Committee.