title: Diagnosis and classification in autism.
abstract: This study compared four systems for the diagnosis of autism (DSM-III, DSM-III-R, DSM-IV, and ICD-10) with two empirically derived taxa of autism, and with three social subgroups of autism (Aloof, Passive, and Active-but-Odd) in 194 preschool children with salient social impairment. There were significant behavior and IQ differences between autistic and other-PDD groups for all four diagnostic systems, and a significant association was found (a) for Taxon B, diagnoses of autism, and the Aloof subgroup, and (b) for Taxon A, other-PDD, and the Active-but-Odd subgroup. Findings offer support for two major overlapping continua within idiopathic Pervasive Developmental Disorder.
authors.affiliation: Trenton State College, New Jersey 08650-4700, USA.
authors.forename: L
authors.initials: L
authors.lastname: Waterhouse
authors.forename: R
authors.initials: R
authors.lastname: Morris
authors.forename: D
authors.initials: D
authors.lastname: Allen
authors.forename: M
authors.initials: M
authors.lastname: Dunn
authors.forename: D
authors.initials: D
authors.lastname: Fein
authors.forename: C
authors.initials: C
authors.lastname: Feinstein
authors.forename: I
authors.initials: I
authors.lastname: Rapin
authors.forename: L
authors.initials: L
authors.lastname: Wing
mesh_terms: D000465:Algorithms; D001321:Autistic Disorder / Q000150:complications / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D003147:Communication Disorders / Q000150:complications / Q000175:diagnosis; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D011569:Psychiatric Status Rating Scales