Contributors -- Preface -- Applying GIS and spatial analysis to studies of health in children with disabilities -- The epidemiology of psychopathology in people with intellectual disability : a forty year review -- Anxiety in intellectual disabilities : challenges and next steps -- Morphosyntactical difficulties and rehabilitation in persons with Down syndrome -- What's age got to do with it? Implications of maternal age on families of offspring with Down syndrome -- "The mysterious myth of Attention deficit..." revisited: a discussion of how the developmental approach is transforming the understanding of intellectual disability -- Assessment of motor behavior among children and adolescents with Autism spectrum disorder -- Index -- Contents of previous volumes