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Kleinman, Jamie M.; Robins, Diana L.; Ventola, Pamela E.; Pandey, Juhi; Boorstein, Hilary C.; Esser, Emma L.; Wilson, Leandra B.; Rosenthal, Michael A.; Sutera, Saasha; Verbalis, Alyssa D.; Barton, Marianne; Hodgson, Sarah; Green, James; Dumont-Mathieu, Thyde; Volkmar, Fred; Chawarska, Katarzyna; Klin, Ami; Fein, Deborah – Journal of Autism and Developmental Disorders, 2008
Autism spectrum disorders (ASD) often go undetected in toddlers. The Modified Checklist for Autism in Toddlers (M-CHAT) was used to screen 3,793 children aged 16-30 months from low- and high-risk sources; screen positive cases were diagnostically evaluated. Re-screening was performed on 1,416 children aged 42-54 months. Time1 Positive Predictive…
Descriptors: Check Lists, Autism, Toddlers, Children
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Chawarska, Katarzyna; Paul, Rhea; Klin, Ami; Hannigen, Sarah; Dichtel, Laura E.; Volkmar, Fred – Journal of Autism and Developmental Disorders, 2007
Symptoms of Autism Spectrum Disorders (ASD) begin to manifest during the first 2 years; there is limited evidence regarding type and timing of symptom onset. We examined factors related to parental age of recognition (AOR) of early abnormalities and the association between AOR and diagnosis and levels of functioning at 2 and 4 years in 75 toddlers…
Descriptors: Toddlers, Autism, Pervasive Developmental Disorders, Symptoms (Individual Disorders)
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Grigorenok, Elena L.; Klin, Ami; Pauls, David L.; Senft, Riley; Hooper, Catalina; Volkmar, Fred – Journal of Autism and Developmental Disorders, 2002
This study of hyperlexia in 80 children with developmental delays found no significant differences in the frequency of hyperlexia in girls compared with boys; a significantly elevated frequency of hyperlexia in children diagnosed with pervasive developmental disorders (PDD) compared with children with non-PDD diagnoses; and a similar range of IQ…
Descriptors: Child Development, Children, Developmental Delays, Incidence