James Coplan, MD, Developmental Pediatrician, describes some of the underlying neuropsychological deficits in children with ASD (cognitive rigidity, dysregulation of attention, arousal, sleep, and sensory processing), and explains how these underlying deficits lead to maladaptive behaviors such as insistence on sameness, perseveration, impulsivity, hyperactivity, agitation, aggressive or self-injurious behavior, poor sleep, and abnormalities of sensory…