Abstract
We examined whether clinically distinct subgroups can be derived from a sample of toddlers (n = 186) who failed the Modified Checklist for Autism in Toddlers, received a comprehensive clinical evaluation, and were diagnosed
with an autism spectrum disorder (ASD). Three subgroups emerged from cluster analysis distinguished by (a) social, communication,
and intellectual skills and (b) the rate and intensity of repetitive behaviors and abnormal sensory response. Preoccupations,
compulsions, and rituals did not distinguish resultant subgroups. These results support a dimensional diagnostic view of ASDs
in toddlers since subgroup differences were based on symptom severity rather than different symptom profiles. Results also
identify specific types and levels of behavioral deficit relevant to toddler populations. Implications for early diagnosis
are discussed.
with an autism spectrum disorder (ASD). Three subgroups emerged from cluster analysis distinguished by (a) social, communication,
and intellectual skills and (b) the rate and intensity of repetitive behaviors and abnormal sensory response. Preoccupations,
compulsions, and rituals did not distinguish resultant subgroups. These results support a dimensional diagnostic view of ASDs
in toddlers since subgroup differences were based on symptom severity rather than different symptom profiles. Results also
identify specific types and levels of behavioral deficit relevant to toddler populations. Implications for early diagnosis
are discussed.
- Content Type Journal Article
- Pages 1-10
- DOI 10.1007/s10803-011-1230-0
- Authors
- Lisa D. Wiggins, Georgia State University, Atlanta, GA, USA
- Diana L. Robins, Georgia State University, Atlanta, GA, USA
- Lauren B. Adamson, Georgia State University, Atlanta, GA, USA
- Roger Bakeman, Georgia State University, Atlanta, GA, USA
- Christopher C. Henrich, Georgia State University, Atlanta, GA, USA
- Journal Journal of Autism and Developmental Disorders
- Online ISSN 1573-3432
- Print ISSN 0162-3257