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1 results

  • Autism screening questionnaire: Diagnostic validity

  • Sibel Kazak Berument, Michael Rutter, Catherine Lord, Andrew Pickles, Anthony Bailey
  • Journal:
    The British Journal of Psychiatry / Volume 175 / Issue 5 / November 1999
    Published online by Cambridge University Press:
    03 January 2018, pp. 444-451
    Print publication:
    November 1999
  • Background

    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.

    Aims

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

    Method

    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.

    Results

    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.

    Conclusions

    The ASQ is an effective screening questionnaire for PDD.