The AQ is a diagnostic questionnaire designed to measure the expression of Autism-Spectrum traits in an individual, based on their own subjective self-assessment.
Created by the Simon Baron-Cohen and colleagues at the Autism Research Centre, University of Cambridge. Freely available to the research community or for clinicians, provided that they are used for research purposes and not for commercial use.
More: autismresearchcentre.com
Self-report scales are for screening purposes only, and must be interpreted by a qualified health professional in conjunction with clinical assessment. They cannot be used alone for diagnostic or treatment purposes.