Adult ADHD Test: WHO ASRS v1.1 Screener (Free)

What it measures

This is the World Health Organization's Adult ADHD Self-Report Scale (ASRS v1.1) Part A screener. It uses the six questions that research found most predictive of adult attention-deficit/hyperactivity disorder, covering both inattention (finishing tasks, organising, remembering, procrastinating) and hyperactivity-impulsivity (fidgeting, feeling driven by a motor). It looks at how often these have happened over the past 6 months.

How it works

You answer six short questions about the last 6 months on a five-point frequency scale from Never to Very often. We add your answers into a single score out of 24 and place it in a band that describes how closely your pattern matches what the WHO screener flags for further evaluation. It takes about three minutes.

Tips for an accurate result

• 1Symptoms should be long-standing — True ADHD patterns usually start in childhood and persist. A recent, sudden change is more likely to reflect stress, sleep loss, mood, or other causes worth checking.
• 2Bring real examples to a clinician — Concrete situations (missed deadlines, lost items, restlessness) are more useful to a doctor than the score alone.
• 3Rule out the obvious first — Poor sleep, anxiety, depression, thyroid problems, and high stress can all mimic ADHD symptoms.
• 4Retake if things change — If your circumstances shift, you can repeat the screener to see whether the pattern persists.