Schopler, E., Van Bourgondien, M. E., Wellman, G. J., & Love, S. R. (2010). Childhood Autism Rating Scale (2nd ed.). Western Psychological Services.

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Consists of information gathered from the child and parental completion of a questionnaire. Though there is a parental questionnaire to fill out, this can be incorporated into the diagnosis decision by the professional and is not sufficient to stand alone for diagnosis. This test is best suited for children under age 6, or children with an IQ of 79 or lower, and is not meant for older children/adults or high-functioning. 

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