Neurobehavioral Disorders of Childhood: An Evolutionary PerspectiveAttention deficit disorder, attention deficit hyperactive disorder, pervasive developmental disorder, obsessive compulsive disorder, asperger's syndrome, and autism, to name but a few, may be viewed as points on a spectrum of developmental disabilities in which those points share features in common and possibly etiology as well, varying only in severity and in the primary anatomical region of dysfunctional activity. This text focuses on alterations of