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Autism screening questionnaire: Diagnostic validity

  • Sibel Kazak Berument (a1), Michael Rutter (a1), Catherine Lord (a1), Andrew Pickles (a1) and Anthony Bailey (a1)...



Good interview and diagnostic measures for autism and other pervasive developmental disorders (PDDs) are available but there is a lack of a good screening questionnaire.


To develop and test a screening questionnaire based on items in the best available diagnostic interview – the Autism Diagnostic Interview – Revised (ADI–R)


A 40 -item scale, the Autism Screening Questionnaire (ASQ), was developed and tested on a sample of 160 individuals with PDD and 40 with non-PDD diagnoses.


The ASQ has good discriminative validity with respect to the separation of PDD from non-PDD diagnoses at all IQ levels, with a cut-off of 15 proving most effective. The differentiation between autism and other varieties of PDD was weaker.


The ASQ is an effective screening questionnaire for PDD.


Corresponding author

Dr Michael Rutter, Social, Genetic and Developmental Psychiatry Research Centre. Institute of Psychiatry, De Crespigny Park, London SES 8AF


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Declaration of interest

The study was supported by the Medical Research Council.



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Autism screening questionnaire: Diagnostic validity

  • Sibel Kazak Berument (a1), Michael Rutter (a1), Catherine Lord (a1), Andrew Pickles (a1) and Anthony Bailey (a1)...


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