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Adult ADHD Self-Assessment
The complete 18-question ASRS v1.1 Symptom Checklist with clinical scoring
Important: This is a screening tool, not a diagnostic test. It cannot tell you whether you have ADHD — only a qualified healthcare professional can do that. However, your results can help you decide whether to seek a formal assessment.
ADHD Symptom Checklist
Think about how you’ve felt and behaved over the past 6 months
Responses meeting each question’s clinical threshold are highlighted in amber. At the end we’ll ask for your first name, email and mobile so we can show your results and email you a copy.
About This Assessment
This is the complete 18-question Adult ADHD Self-Report Scale (ASRS v1.1) Symptom Checklist, developed by the World Health Organization with researchers from Harvard Medical School and New York University.1 It’s one of the most widely used ADHD screening tools worldwide.
Part A vs Part B
Part A (Questions 1-6) contains the six questions found to be most predictive of ADHD. This is the official screening component — if you meet 4 or more criteria in Part A, your symptoms are considered “highly consistent with ADHD” and further evaluation is warranted.
Part B (Questions 7-18) provides additional information about your full symptom profile. While Part B doesn’t have a formal cutoff, the responses help identify which types of symptoms are most prominent for you and can guide clinical discussion.
The Three Subscales
The ASRS measures symptoms across three areas:
- Inattentive (Q1, 2, 3, 4, 7, 8, 9, 10, 11): Difficulty with focus, organisation, memory, and attention
- Hyperactive/Impulsive - Motor (Q5, 6, 12, 13, 14): Physical restlessness, difficulty sitting still, feeling driven
- Hyperactive/Impulsive - Verbal (Q15, 16, 17, 18): Talking too much, interrupting, difficulty waiting
Your pattern across these subscales can help identify whether you have predominantly inattentive symptoms, predominantly hyperactive-impulsive symptoms, or a combination of both.
Frequently Asked Questions
What's the difference between this and the 6-question version?
The 6-question screener (Part A) is designed for quick screening. This full 18-question version provides a more complete picture of your symptoms across all ADHD criteria, which can be more useful for clinical discussions and understanding your specific symptom profile.
I scored 4+ on Part A. Does that mean I have ADHD?
A Part A score of 4 or more means your symptoms are "highly consistent with ADHD" — but it's not a diagnosis. Other conditions can cause similar symptoms. A qualified healthcare professional needs to conduct a comprehensive evaluation that includes clinical interview, childhood history, and assessment of how symptoms affect your functioning.
My Part A score was low but Part B was high. What does that mean?
The Part A questions were selected for their predictive power, but ADHD can present differently in different people. If you have significant symptoms in Part B or if your experiences are affecting your life, it's still worth discussing with a healthcare professional.
Why do different questions have different thresholds?
The thresholds were determined by research identifying which response levels best distinguish people with ADHD from those without. For some symptoms, even "sometimes" is clinically significant, while for others only "often" or "very often" reaches the threshold. This reflects how these symptoms typically present in adults.
Can I bring these results to my doctor?
Yes, and we encourage it. Your completed assessment gives your healthcare provider useful information to guide their clinical interview and helps ensure a thorough evaluation.
References
- Kessler RC, Adler L, Ames M, et al. The World Health Organization Adult ADHD Self-Report Scale (ASRS): a short screening scale for use in the general population. Psychological Medicine. 2005. PubMed PMID 15841682 — Development and validation of the ASRS, including the six-item Part A screener.
Sources were last checked on 5 October 2026. See all sources used on this site on our Sources page.
Ready for a professional assessment?
Two telehealth appointments with an experienced GP — no referral needed.