title: Effect of language and task demands on the diagnostic effectiveness of the autism diagnostic observation schedule: the impact of module choice.
abstract: The ADOS characterizes socio-communicative deficits in autism spectrum disorders (ASD). In this study the effect of module choice on ADOS classification was examined. For 74 participants (52 autism, 22 PDD-NOS), Module 1 and Module 2 were administered in a single session. Fifty-one participants maintained ADOS classification, with 17 more impaired on M2 and 6 more impaired on M1. For 64 participants (25 autism, 39 PDD-NOS), Module 2 and Module 3 were administered. Thirty-nine participants maintained classification, with 24 more impaired on M3 and 1 more impaired on M2. As expected, more impairment was indicated when a module with more language and task demands was administered. Clinical judgment of the most appropriate module for administration was found to be important.
authors.affiliation: University of Wisconsin - Milwaukee, Milwaukee, WI, USA. bklein@uwm.edu
authors.forename: Bonita P
authors.initials: BP
authors.lastname: Klein-Tasman
authors.forename: Susan
authors.initials: S
authors.lastname: Risi
authors.forename: Catherine E
authors.initials: CE
authors.lastname: Lord
mesh_terms: D001321:Autistic Disorder / Q000175:diagnosis* / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D002983:Clinical Competence; D005260:Female; D006801:Humans; D007223:Infant; D007600:Judgment; D007806:Language Disorders / Q000175:diagnosis* / Q000453:epidemiology*; D008297:Male; D019370:Observation; D015588:Observer Variation; D015995:Prevalence; D011581:Psychological Tests; D012720:Severity of Illness Index