Adult ADHD Self-Report Scale · World Health Organization
About This Screener
The ASRS v1.1 Part A is a 6-question screener developed by Dr. Ronald Kessler, Dr. Lenard Adler, and colleagues for the World Health Organization. It is the most widely used validated screener for adult ADHD in primary care and research settings worldwide.
Part A contains the 6 questions most predictive of an ADHD pattern. Rate each item based on how you have felt and conducted yourself over the past 6 months.
Who this is for: Adults (18+) who wonder whether ADHD may be part of their experience — especially those who were never diagnosed as children, or who are seeing themselves in descriptions of adult ADHD. Many adults with ADHD are not diagnosed until their 30s, 40s, or 50s. You have been working harder than most people realize for a long time. That is worth understanding.
6 questions · under 3 minutes · no sign-in required · no data stored
Please rate each item based on how you have felt and conducted yourself over the past 6 months. Mark the circle that best describes your frequency.
★ Highlighted columns represent the frequency levels that are clinically significant for each item — based on WHO field-trial data.
Never
Rarely
Sometimes ★
Often ★
Very Often ★
Your ASRS v1.1 Results
of 6 items in clinically significant range
4
threshold for positive screen
Your Responses ▼ Show
#
Question
Your Answer
Significant?
Important: A positive screen is not a diagnosis of ADHD. An accurate diagnosis requires a comprehensive clinical evaluation by a qualified professional — including a structured interview, rating scales across multiple settings, and review of history. A positive screen means the pattern is worth exploring further with your doctor or a mental health specialist. That is a worthwhile step.
Kessler RC, Adler L, Ames M, et al. (2005). The World Health Organization Adult ADHD Self-Report Scale (ASRS). Psychological Medicine. 35:245–256. Public domain — available from WHO.