The Autism Spectrum Quotient (AQ), developed by the Autism Research Centre, provides a measure of the extent of autistic traits in adolescents.
You can download the diagnostic test from Autism Research Centre (ARC), Department of Developmental Psychiatry, University of Cambridge, provided that it is used for genuine research purposes, and provided due acknowledgement of ARC as the source is given.
- S. Baron-Cohen, R. A. Hoekstra, R. Knickmeyer and S. Wheelwright, (2006)
The Autism-Spectrum Quotient (AQ) — Adolescent Version
Journal of Autism and Developmental Disorders 36:343-350