The autism spectrum encompasses a range of neurodevelopmental conditions, all pointing to the presence of disorders such as classic autism, Asperger's syndrome, or Rett's syndrome. However, there is considerable variation in the type and severity of the symptoms. This test combines the insights of several prior efforts to research the autism spectrum to bring you a single, composite test measuring autism spectrum occurrences across 10 different domains. Where do you fall on the autism spectrum?

This is an online version of Autism Spectrum Quotient Test (AQ) by Simon Baron-Cohen; it is a diagnostic questionnaire designed to measure the expression of Autism-Spectrum traits in an individual, by his or her own subjective self-assessment. Click here to access the assessment.

The RAADS-14 is a shortened version of the 80-question RAADS-R autism screening test. The 14-question RAADS-14 is intended to be a quick screening tool for clinicians, much like the AQ-10. The RAADS-14 is a tool for clinicians to differentiate between autism and other psychiatric diagnoses whose traits might make an autism diagnosis in adults more difficult. Click here to access the assessment.

The ADHD spectrum encompasses a range of symptoms, all pointing to the presence of Attention-Deficit/Hyperactivity Disorder. However, there is considerable variation in the type and severity of the symptoms. This test combines the insights of several prior efforts to research the ADHD spectrum to bring you a single, composite test measuring ADHD occurrences across seven different domains. Where do you fall on the ADHD spectrum?

The Adult ADHD Self-Report Scale (ASRS-v1.1) Symptom Checklist is an instrument consisting of the eighteen DSM-IV TR criteria. Six of the eighteen questions were found to be the most predictive of symptoms consistent with ADHD. The ASRS-v1.1 Symptom Checklist was developed in conjunction with the World Health Organization (WHO), and the Workgroup on Adult ADHD which included a team of psychiatrists and researchers. Click here to access the assessment.

The Vanderbilt ADHD Diagnostic Rating Scale (VADRS) is a psychological assessment tool for parents of children aged 6 to 12 designed to measure the severity of attention deficit hyperactivity disorder (ADHD) symptoms. Developed by Mark Wolraich at the Oklahoma Health Sciences Center, this rating scale also includes items related to other disorders which are frequently comorbid with ADHD. Click here to access the assessment.