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Reliability of the ADI-R for the Single Case-Part II: Clinical versus Statistical Significance
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Cicchetti, Domenic V.; Lord, Catherine; Koenig, Kathy; Klin, Ami; Volkmar, Fred R. – Journal of Autism and Developmental Disorders, 2014
In an earlier investigation, the authors assessed the reliability of the ADI-R when multiple clinicians evaluated a single case, here a female 3 year old toddler suspected of having an autism spectrum disorder (Cicchetti et al. in "J Autism Dev Disord" 38:764-770, 2008). Applying the clinical criteria of Cicchetti and Sparrow ("Am J…
Descriptors: Autism, Females, Toddlers, Pervasive Developmental Disorders
Multisite Study of New Autism Diagnostic Interview-Revised (ADI-R) Algorithms for Toddlers and Young Preschoolers
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Kim, So Hyun; Thurm, Audrey; Shumway, Stacy; Lord, Catherine – Journal of Autism and Developmental Disorders, 2013
Using two independent datasets provided by National Institute of Health funded consortia, the Collaborative Programs for Excellence in Autism and Studies to Advance Autism Research and Treatment (n = 641) and the National Institute of Mental Health (n = 167), diagnostic validity and factor structure of the new Autism Diagnostic Interview (ADI-R)…
Descriptors: Autism, Toddlers, Preschool Children, Clinical Diagnosis
Combining Information from Multiple Sources for the Diagnosis of Autism Spectrum Disorders for Toddlers and Young Preschoolers from 12 to 47 Months of Age
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Kim, So Hyun; Lord, Catherine – Journal of Child Psychology and Psychiatry, 2012
Background: Purpose of this study was to systematically examine combined use of the Autism Diagnostic Interview-Revised (ADI-R) and Autism Diagnostic Observation Schedule (ADOS) for children under age 4 using newly developed and revised diagnostic algorithms. Methods: Single and combined use of the ADI-R and ADOS algorithms were compared to…
Descriptors: Autism, Pervasive Developmental Disorders, Toddlers, Clinical Diagnosis
Patterns of Developmental Trajectories in Toddlers with Autism Spectrum Disorder
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Lord, Catherine; Luyster, Rhiannon; Guthrie, Whitney; Pickles, Andrew – Journal of Consulting and Clinical Psychology, 2012
Objective: Our objective was to follow toddlers referred for risk of autism, using standardized observational measures administered frequently from age 18 months to age 36 months. Method: Sixty-five children who were consecutive referrals and 13 children from other research projects were seen approximately every 2 months, from age 18 months to age…
Descriptors: Disability Identification, Autism, Probability, Infants
Annual Research Review: Re-Thinking the Classification of Autism Spectrum Disorders
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Lord, Catherine; Jones, Rebecca M. – Journal of Child Psychology and Psychiatry, 2012
Background: The nosology of autism spectrum disorders (ASD) is at a critical point in history as the field seeks to better define dimensions of social-communication deficits and restricted/repetitive behaviors on an individual level for both clinical and neurobiological purposes. These different dimensions also suggest an increasing need for…
Descriptors: Autism, Classification, Psychometrics, Pervasive Developmental Disorders
Reliability of the ADI-R: Multiple Examiners Evaluate a Single Case
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Cicchetti, Domenic V.; Lord, Catherine; Koenig, Kathy; Klin, Ami; Volkmar, Fred R. – Journal of Autism and Developmental Disorders, 2008
The authors assessed the reliability of the Autism Diagnostic Interview (ADI-R). Seven Clinical Examiners evaluated a three and one half year old female toddler suspected of being on the Autism Spectrum. Examiners showed agreement levels of 94-96% across all items, with weighted kappa (K[subscript w]) between 0.80 and 0.88. They were in 100%…
Descriptors: Autism, Interrater Reliability, Measures (Individuals), Clinical Diagnosis