Journal of Autism and Developmental Disorders

, Volume 39, Issue 9, pp 1305–1320

The Autism Diagnostic Observation Schedule—Toddler Module: A New Module of a Standardized Diagnostic Measure for Autism Spectrum Disorders

Authors

    • University of Michigan Autism and Communication Disorders Center
    • Harvard Medical School
  • Katherine Gotham
    • University of Michigan Autism and Communication Disorders Center
  • Whitney Guthrie
    • University of Michigan Autism and Communication Disorders Center
  • Mia Coffing
    • University of Michigan Autism and Communication Disorders Center
  • Rachel Petrak
    • University of Michigan Autism and Communication Disorders Center
    • University of Michigan School of Public Health
  • Karen Pierce
    • University of California
  • Somer Bishop
    • University of Michigan Autism and Communication Disorders Center
    • University of Wisconsin
  • Amy Esler
    • University of Michigan Autism and Communication Disorders Center
    • University of Minnesota
  • Vanessa Hus
    • University of Michigan Autism and Communication Disorders Center
    • University of Washington
  • Rosalind Oti
    • University of Michigan Autism and Communication Disorders Center
  • Jennifer Richler
    • University of Michigan Autism and Communication Disorders Center
    • University of Minnesota
  • Susan Risi
    • University of Michigan Autism and Communication Disorders Center
  • Catherine Lord
    • University of Michigan Autism and Communication Disorders Center
Original Paper

DOI: 10.1007/s10803-009-0746-z

Cite this article as:
Luyster, R., Gotham, K., Guthrie, W. et al. J Autism Dev Disord (2009) 39: 1305. doi:10.1007/s10803-009-0746-z

Abstract

The Autism Diagnostic Observation Schedule (ADOS; Lord et al., J Autism Dev Disord, 30(3):205–223, 2000) is widely accepted as a “gold standard” diagnostic instrument, but it is of restricted utility with very young children. The purpose of the current project was to modify the ADOS for use in children under 30 months of age. A modified ADOS, the ADOS Toddler Module (or Module T), was used in 360 evaluations. Participants included 182 children with best estimate diagnoses of ASD, non-spectrum developmental delay or typical development. A final set of protocol and algorithm items was selected based on their ability to discriminate the diagnostic groups. The traditional algorithm “cutoffs” approach yielded high sensitivity and specificity, and a new range of concern approach was proposed.

Keywords

Autism spectrum disordersDiagnosisADOSInfantsToddlers

Copyright information

© Springer Science+Business Media, LLC 2009