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Brennan, Laura; Barton, Marianne; Chen, Chi-Ming; Green, James; Fein, Deborah – Journal of Autism and Developmental Disorders, 2015
Hierarchical cluster analyses were used to detect three subgroups in a sample of children with pervasive developmental disorder--not otherwise specified (PDD-NOS) evaluated at ages 2 and 4. At age 2, Cluster 1 demonstrated few autism symptoms and high cognitive scores; 60% no longer met criteria for PDD at 4. Cluster 2 exhibited more autism…
Descriptors: Clinical Diagnosis, Autism, Pervasive Developmental Disorders, Symptoms (Individual Disorders)