Mental subnormality and "childhood schizophrenia".
D000293:Adolescent; D000367:Age Factors; D001321:Autistic Disorder; D001925:Brain Damage, Chronic / Q000175:diagnosis; D002648:Child; D002653:Child Behavior Disorders; D002675:Child, Preschool; D006801:Humans; D008607:Intellectual Disability; D007360:Intelligence; D007398:Interpersonal Relations; D010290:Parents; D012561:Schizophrenia, Childhood / Q000175:diagnosis*; D012801:Sibling Relations