Thought disorder in high-functioning autistic adults

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Abstract
Examined thought disorder in a sample (n = 11) of high- functioning autistic young adults and older adolescents (mean IQ = 83) utilizing objective ratings from the Thought, Language and Communication Disorder Scale (TLC Scale) and projective data from the Rorschach inkblots. Results from the TLC Scale pointed to negative features of thought disorder in this sample (e.g., Poverty of Speech). Rorschach protocols revealed poor reality testing and perceptual distortions in every autistic subject, and also identified several areas of cognitive slippage (e.g., Incongruous Combinations, Fabulized Combinations, Deviant Responses, Inappropriate Logic). Comparing TLC Scale and Rorschach results to schizophrenic reference groups, autistic subjects demonstrated significantly more Poverty of Speech and less Illogically on the TLC Scale, and on the Rorschach they evidenced features of thought disorder that are encountered also in schizophrenia. Results are discussed in relation to the measures employed, and to areas of similarity and difference between autism and schizophrenia.

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