This self-report measure is used to screen for autistic traits in adults and to quantify the degree to which these traits are endorsed. The Autism-Spectrum Quotient (AQ) was developed by Simon Baron-Cohen and Sally Wheelwright.
The instrument consists of 50 items and is typically completed in about 10 minutes. Items sample a range of characteristics commonly associated with the autism spectrum (e.g., social interaction and communication style, attention to detail, preference for routines, and related behavioral tendencies). Results are generally interpreted as an index of trait endorsement and should be considered alongside clinical interview, developmental history, and other assessment data; it is not intended to establish a diagnosis on its own.
In clinical or research settings, the Autism-Spectrum Quotient (AQ) may support case formulation, inform decisions about the need for further evaluation, and facilitate discussion of strengths and challenges relevant to functioning.