Free ADHD Test for Adults
Could you have adult ADHD? Take this free, evidence-based ADHD self assessment to find out whether your experiences may be consistent with attention deficit hyperactivity disorder. This ADHD screening for adults is based on the World Health Organisation's Adult ADHD Self-Report Scale (ASRS v1.1), one of the most widely used and validated tools for identifying ADHD symptoms in adults.
The ASRS v1.1 was developed in conjunction with the WHO and has been shown to be a reliable ADHD test for adults in primary care and community settings. It takes less than two minutes to complete and your answers are not stored or shared.
Important Disclaimer
This is a screening tool, not a diagnostic instrument. Only a qualified healthcare professional can diagnose ADHD. This tool is intended for informational and educational purposes only and should not replace professional medical advice.
How often do you have trouble wrapping up the final details of a project, once the challenging parts have been done?
Important Information
Please read the following before interpreting your results
This screening tool is based on the ASRS-v1.1 Part A and is intended for educational and informational purposes only. It is not a diagnostic instrument.
A positive result on this screener does not mean you have ADHD. Only a qualified healthcare professional — such as a psychiatrist, psychologist, or specialist nurse — can diagnose ADHD following a comprehensive clinical assessment.
A negative result does not rule out ADHD. If you are experiencing significant difficulties with attention, organisation, or impulsivity, we encourage you to speak with your GP regardless of your score.
This tool is designed for adults aged 18 and over. It has not been validated for use in children or adolescents.
Your responses are processed entirely in your browser and are not stored, transmitted, or shared with anyone. We do not collect any personal data through this tool.
ADHD Mentor provides practical mentoring support and is not a clinical or medical service. Caitlin Hollywood is not a doctor, psychologist, or licensed therapist. Mentoring is not a substitute for medical diagnosis or treatment.
About the ASRS v1.1
The science behind this ADHD screening tool
The Adult ADHD Self-Report Scale (ASRS v1.1) was developed by the World Health Organisation (WHO) in collaboration with researchers at Harvard Medical School and New York University. It is part of the WHO Composite International Diagnostic Interview (CIDI) and is one of the most widely studied ADHD screening tools in the world.
The full ASRS consists of 18 questions covering the DSM diagnostic criteria for adult ADHD. The six-question Part A screener used here has been shown to be the most predictive subset, with strong sensitivity and specificity for identifying individuals who are likely to meet criteria for ADHD upon full clinical evaluation.
Research has demonstrated that the ASRS Part A screener has a sensitivity of 91.4% and specificity of 96.0% in clinical settings, making it one of the most accurate brief screening instruments available. It uses a dichotomous scoring method where each item is scored against a clinically determined threshold, and a total score of 4 or more out of 6 indicates that symptoms are highly consistent with ADHD in adults.
References
- Kessler, R. C., Adler, L., Ames, M., Demler, O., Faraone, S., Hiripi, E., ... & Walters, E. E. (2005). The World Health Organisation Adult ADHD Self-Report Scale (ASRS): a short screening scale for use in the general population. Psychological Medicine, 35(2), 245–256.
- Adler, L. A., Spencer, T., Faraone, S. V., Kessler, R. C., Howes, M. J., Biederman, J., & Secnik, K. (2006). Validity of pilot Adult ADHD Self-Report Scale (ASRS) to rate adult ADHD symptoms. Annals of Clinical Psychiatry, 18(3), 145–148.
- Ustun, B., Adler, L. A., Rudin, C., Faraone, S. V., Spencer, T. J., Berglund, P., ... & Kessler, R. C. (2017). The World Health Organisation Adult Attention-Deficit/ Hyperactivity Disorder Self-Report Screening Scale for DSM-5. JAMA Psychiatry, 74(5), 520–527.
The Adult ADHD Self-Report Scale (ASRS-v1.1) Symptom Checklist was developed in conjunction with the World Health Organisation (WHO), and the Workgroup on Adult ADHD including Lenard Adler, MD, Ronald C. Kessler, PhD, and Thomas Spencer, MD. The questions in this tool are reproduced for educational and screening purposes. © World Health Organisation. All rights reserved.
Learn More About ADHD
Explore our resources and support services
What Is ADHD Mentoring?
Discover how practical, non-clinical mentoring support helps adults manage executive function challenges.
About ADHD Mentor
Learn about Caitlin's background in social work and her approach to ADHD support.
Book a Session
Ready to take the next step? Book a one-to-one mentoring session online.
ADHD Blog
Read practical articles and insights about living with ADHD as an adult.