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Related Experiment Videos

Autism screening questionnaire: diagnostic validity.

S K Berument1, M Rutter, C Lord

  • 1MRC Child Psychiatry Unit, Institute of Psychiatry, London.

The British Journal of Psychiatry : the Journal of Mental Science
|May 2, 2000
PubMed
Summary
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The Autism Screening Questionnaire (ASQ) effectively screens for pervasive developmental disorders (PDDs). It demonstrates good validity in distinguishing PDD from non-PDD diagnoses across all IQ levels.

Area of Science:

  • Child Psychology
  • Developmental Neuroscience
  • Clinical Psychiatry

Background:

  • Established diagnostic interviews for autism and pervasive developmental disorders (PDDs) exist.
  • A significant gap remains in the availability of effective screening questionnaires for PDDs.

Purpose of the Study:

  • To develop and validate a screening questionnaire for PDDs.
  • The questionnaire was based on items from the Autism Diagnostic Interview--Revised (ADI-R).

Main Methods:

  • A 40-item scale, the Autism Screening Questionnaire (ASQ), was created.
  • The ASQ was administered to 160 individuals with PDD and 40 individuals with non-PDD diagnoses.

Main Results:

  • The ASQ demonstrated strong discriminative validity for separating PDD from non-PDD diagnoses, irrespective of IQ.

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  • A cutoff score of 15 on the ASQ was identified as the most effective for differentiation.
  • The questionnaire showed weaker performance in differentiating between autism and other PDD subtypes.

    • Conclusions:

    • The Autism Screening Questionnaire (ASQ) is a validated and effective tool for screening pervasive developmental disorders.
    • The ASQ aids in the early identification of PDDs, facilitating timely intervention.