How to measure autistic traits in adults

Here are questionnaires used to measure autistic traits in adults:

• Autism Spectrum Quotient (AQ).
  • Questions in Japanese is on the last page of this PDF.
  • The result is a score range: 0-50.
• Aspie Quiz.
  • No Japanese version found.
  • Chinese version exists for Version 4 of the quiz. Current version is 5.
  • The result is a radar chart:

    

• Girls can sometimes mimic non-spectrum behaviors well and has hidden austic traits. The Camouflaging Autistic Traits Questionnaire (CAT-Q) questionnaire is used to measure this.
  • Questions in Japanese is on the last two pages of this PDF.
  • The result is a total score and three sub-scores. The sub-scores are compensation, masking and assimilation scores. These sub-areas are strategies that an autistic person uses to camouflage themselves.
• Broad Autism Phenotype Questionnaire (BAPQ) is used to measure people who may not have Autism Spectrum Disorder (ASD) but may have autistic traits because they are relatives of autistic individuals.
  • There is a Japanese version of the research, but the paper is behind a paywall.
  • The result is a total score and three sub-scores. The three sub-areas are aloof personality, rigid personality and pragmatic language problems.

Autism is a considered a spectrum disorder, hence the name Autism Spectrum Disorder (ASD). There is a spectrum of traits. For all questionnaires, it is important to compare your own results to results of non-autistic and autistic individuals reported by the research. The linked tests have discussion on test results, please read them. In this way, you can see to what degree are your behaviors different from these two groups of people.