Use of the Childhood Autism Rating Scale (CARS) for children with high functioning autism or Asperger syndrome

Susan Mayes, Susan Calhoun, Michael Murray, Jill D. Morrow, Kirsten K.L. Yurich, Shiyoko Cothren, Heather Purichia, Fauzia Mahr, James N. Bouder, Christopher Petersen

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

The authors of the Childhood Autism Rating Scale (CARS) state in the manual that the best cutoff score for distinguishing low functioning autism (LFA) from intellectual disability is 30 for children and 28 for adolescents and adults. This study determined that a cutoff score of 25.5 was most accurate in differentiating between high functioning autism or Asperger syndrome (HFA; n = 197) and ADHD (n = 74) in a sample of 1- to 16-year-olds with IQs of 80 or higher. Classification accuracy was 96% using clinician scores and 72% using parent scores. Children with LFA (n = 193) had significantly higher clinician and parent scores than children with HFA, and scores were negatively correlated with IQ. None of the typical children (n = 64) earned parent scores greater than 21.

Original languageEnglish (US)
Pages (from-to)31-38
Number of pages8
JournalFocus on Autism and Other Developmental Disabilities
Volume27
Issue number1
DOIs
StatePublished - Mar 1 2012

All Science Journal Classification (ASJC) codes

  • Pediatrics, Perinatology, and Child Health
  • Neurology
  • Clinical Neurology
  • Cognitive Neuroscience
  • Psychiatry and Mental health

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