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Matson, Johnny L.; Boisjoli, Jessica A. – Research in Autism Spectrum Disorders, 2008
Researchers and clinicians have generally agreed that persons with autism spectrum disorders (ASD) are susceptible to other DSM Axis I disorders. However, to date, little has been done to establish the specific disorders, their rate and severity of occurrence, and their interrelationship with ASD symptoms. One reason for the lack of research has…
Descriptors: Autism, Factor Structure, Psychopathology, Measures (Individuals)
Matson, Johnny L.; Laud, Rinita B.; Gonzalez, Melissa L.; Malone, Carrie J.; Swender, Stephen L. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2005
The use of anti-epileptic medications (AEDs) is much higher in individuals with intellectual disabilities than in the general population. As many of these individuals rely on such medications, clinicians should consider psychometrically sound instruments for assessing adverse side effects of these medications as one aspect of routine clinical…
Descriptors: Evaluation Methods, Seizures, Epilepsy, Developmental Disabilities

Matson, Johnny L.; Russell, Deirdre – Research in Developmental Disabilities, 1994
The Psychopathology Instrument for Mentally Retarded Adults--Sexuality Scale was developed and used to study 86 adults with mild/moderate mental retardation. Psychometric characteristics were favorable. Differences in the rate of sexually aberrant behavior are addressed as a function of living and work placement, positive history of sexual abuse,…
Descriptors: Adults, Mild Mental Retardation, Moderate Mental Retardation, Psychometrics