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Matson, Johnny L.; Belva, Brian; Hattier, Megan A.; Matson, Michael L. – Research in Autism Spectrum Disorders, 2011
Pica is a very serious and often life threatening problem which occurs largely in persons with developmental disabilities. The topic has received sporadic attention from researchers for several decades. This paper reviews definitions, diagnostic implications, causes, prevalence, and assessment methods that have been described in the research…
Descriptors: Developmental Disabilities, Eating Disorders, Behavior Disorders, Symptoms (Individual Disorders)
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Weissman, Adam S.; Bates, Marsha E. – Research in Autism Spectrum Disorders, 2010
Bipolar (BD) symptomatology is prevalent in children with autism spectrum disorders (ASD) and may lead to increased impairment. The current study compared clinical and neurocognitive impairment in children (7-13 years) diagnosed with ASD (n=55), BD (n=34), ASD + BD (n=23), and a non-clinical control group (n=27). Relative to the ASD group, the ASD…
Descriptors: Control Groups, Autism, Behavior Disorders, Suicide
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Sikora, Darryn M.; Hartley, Sigan L.; McCoy, Robin; Gerrard-Morris, Aimee E.; Dill, Kameron – Research in Autism Spectrum Disorders, 2008
Over the past few decades, the reported number of children identified as having one of the Autism Spectrum Disorders (ASD) has increased exponentially. One proposed reason for the dramatic increase in the prevalence of ASD is diagnostic substitution, whereby children with other disorders incorrectly receive a diagnosis of ASD. Little research has…
Descriptors: Incidence, Autism, Clinical Diagnosis, Misconceptions