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Matson, Johnny L.; Wilkins, Jonathan – Research in Developmental Disabilities: A Multidisciplinary Journal, 2009
Social skill excesses and deficits have garnered considerable attention from researchers and clinicians over the last three decades. This trend is undoubtedly due to the central role these problems play in psychopathology and the general adjustment of children of all ages. Not surprisingly, these concerns and attention to such problems have also…
Descriptors: Testing, Psychopathology, Psychometrics, Interpersonal Competence
Matson, Johnny L.; Rivet, Tessa T.; Fodstad, Jill C.; Dempsey, Timothy; Boisjoli, Jessica A. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2009
Autism spectrum disorders (ASD) and intellectual disabilities (ID) are high prevalence developmental disabilities that co-occur at high rates. Furthermore, Axis I psychopathology is known to occur more frequently in individuals with ID than the general population. The problems are lifelong and can be major impediments to independent living.…
Descriptors: Mental Retardation, Autism, Developmental Disabilities, Psychopathology
Matson, Johnny L.; LoVullo, Santino V.; Rivet, Tessa T.; Boisjoli, Jessica A. – Research in Autism Spectrum Disorders, 2009
A limited number of studies currently exist focusing on comorbid psychopathology of children with autism spectrum disorders (ASDs). Due to the heterogeneity of ASD symptoms, communication deficits, and impairments in intellectual functioning, assessing symptoms of psychopathology is complicated. The "Autism Spectrum Disorders-Comorbidity for…
Descriptors: Autism, Construct Validity, Test Validity, Factor Structure
Matson, Johnny L.; Fodstad, Jill C.; Mahan, Sara; Sevin, Jay A. – Research in Autism Spectrum Disorders, 2009
Diagnosing autism and PDD-NOS at very early ages has become a major priority in the field of mental health. More recently, researchers have also come to realize the importance of identifying co-occurring conditions of psychopathology in this population. In the present study, 309 children between 17 and 37 months of age who had been identified as…
Descriptors: Psychopathology, Anxiety, Autism, Toddlers

Matson, Johnny L.; Smiroldo, Brandi B. – Research in Developmental Disabilities, 1997
A study tested the validity of the Diagnostic Assessment for the Severely Handicapped-II (DASH-II) for determining the presence of mania (bipolar disorder) in 22 individuals with severe mental retardation. Results found the mania subscale to be internally consistent and able to be used to classify manic and control subjects accurately. (Author/CR)
Descriptors: Adults, Clinical Diagnosis, Disability Identification, Evaluation Methods