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Direct linkStevenson, Jennifer L.; Hart, Kari R. – Journal of Autism and Developmental Disorders, 2017
The current study systematically investigated the effects of scoring and categorization methods on the psychometric properties of the Autism-Spectrum Quotient. Four hundred and three college students completed the Autism-Spectrum Quotient at least once. Total scores on the Autism-Spectrum Quotient had acceptable internal consistency and…
Descriptors: Autism, Pervasive Developmental Disorders, Scoring, Classification
Ritvo, Riva Ariella; Ritvo, Edward R.; Guthrie, Donald; Ritvo, Max J.; Hufnagel, Demetra H.; McMahon, William; Tonge, Bruce; Mataix-Cols, David; Jassi, Amita; Attwood, Tony; Eloff, Johann – Journal of Autism and Developmental Disorders, 2011
The Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R) is a valid and reliable instrument to assist the diagnosis of adults with Autism Spectrum Disorders (ASD). The 80-question scale was administered to 779 subjects (201 ASD and 578 comparisons). All ASD subjects met inclusion criteria: DSM-IV-TR, ADI/ADOS diagnoses and standardized IQ…
Descriptors: Autism, Asperger Syndrome, Measures (Individuals), Disability Identification
Ritvo, Riva Ariella; Ritvo, Edward R.; Guthrie, Donald; Yuwiler, Arthur; Ritvo, Max Joseph; Weisbender, Leo – Journal of Autism and Developmental Disorders, 2008
An empirically based 78 question self-rating scale based on DSM-IV-TR and ICD-10 criteria was developed to assist clinicians' diagnosis of adults with autism and Asperger's Disorder-the Ritvo Autism and Asperger's Diagnostic Scale (RAADS). It was standardized on 17 autistic and 20 Asperger's Disorder and 57 comparison subjects. Both autistic and…
Descriptors: Autism, Asperger Syndrome, Content Validity, Test Reliability
