“…Although some researchers (Thuppal et al, 2002) have found it useful to incorporate teacher report of child and adolescent behavior to maximize diagnostic certainty (similar to findings with attention deficit hyperactivity disorder [ ADHD]) (Vaughn, Riccio, Hynd, & Hall, 1997), other data have suggested that teacher report is markedly less valuable than parent report when identifying BPSDs in this population (Geller, Warner, Williams, & Zimerman, 1998;Hazell, Lewin, & Carr, 1999;. In general, large discrepancies between parent, teacher, and youth ratings of behavior problems in pediatric BPSDs have been reported across a number of studies (Hazell et al, 1999;Kahana, Youngstrom, Findling, & Calabrese, 2003;.…”