![]() ![]() Depending on the individual’s age, the Wechsler subtests examine verbal comprehension, visual-spatial reasoning, fluid reasoning, working memory, and processing speed. The Wechsler Intelligence Scales are among the most frequently used measures for assessing intelligence. The prevalence of comorbid ID has been shown to vary depending on demographic variables (e.g., location, race/ethnicity) and methodology used to assess IQ, underscoring the need for clinicians to understand the tests best suited to assess IQ in autistic individuals at varying levels of ability. Impairment in cognitive functioning is widely recognized as a common feature of ASD, as well as a predictor of long-term outcomes. This paper provides an overview of recent literature and concludes with recommendations for the development of appropriate neuropsychological testing protocols. In order to fill this assessment gap, it is critical for clinicians to understand the utility and appropriate application of various neuropsychological assessments for use in individuals with ASD at varying levels of ability and to gain competence in proper interpretation based on research using neuropsychological assessments in this population. ![]() Clinically, many ASD-focused evaluations include measures such as the Autism Diagnostic Observation Schedule, 2nd Edition (ADOS-2) and the Autism Diagnostic Interview-Revised (ADI-R), along with a measure of IQ and adaptive behavior as a standard evaluation protocol however, fewer individuals on the autism spectrum are administered more traditional neuropsychological assessments leaving domains such as memory, attention, and other executive functions less frequently characterized. The complexity of presentation that results from a broad spectrum of functioning, and varied behavioral and emotional presentations, can make the neuropsychological assessment process for individuals with ASD challenging and at times overlooked. Furthermore, an estimated 60–70% of children and 69–79% of adults with ASD meet criteria for at least one comorbid psychiatric condition, such as attention-deficit/hyperactivity disorder (ADHD), anxiety, or other mood disorders. While many individuals on the autism spectrum demonstrate average to above average intellectual functioning, approximately 30% also meet criteria for intellectual disability (ID). In addition to core symptoms of ASD, this heterogenous population presents with a wide range of abilities. doi:10.1016/j.encep.2019.07.Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social communication and interaction, as well as restricted, repetitive behaviors. ADI-R and ADOS and the differential diagnosis of autism spectrum disorders: Interests, limits and openings. doi:10.1002/2įrigaux A, Evrard R, Lighezzolo-Alnot J. Diagnostic tests for autism spectrum disorder (ASD) in preschool children. Prevalence and Characteristics of Autism Spectrum Disorder Among Children Aged 8 Years - Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2020. doi:10.1159/000474949Ĭenters for Disease Control and Prevention. The interrater reliability of the autism diagnostic interview-revised (ADI-R) in clinical settings. Encyclopedia of Autism Spectrum Disorders.
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