ADHD test: adult ASRS screener and kids quiz

Screening is not diagnosis

Read that heading twice, because it matters more than any score this page can give you. The ASRS and Vanderbilt-style items above are validated screening tools: they are good at telling you whether symptoms are common enough to be worth investigating further. They cannot rule ADHD in or out on their own, they do not check for the other conditions that can look similar (anxiety, sleep deprivation, thyroid problems, learning differences, trauma), and they do not confirm that symptoms were present before age 12, which DSM-5 requires. A high score here is a reason to book an appointment, not a diagnosis to self-manage around.

Why girls and women are so often missed

ADHD was studied for decades almost entirely in hyperactive young boys, and diagnostic tools were built around that picture. Girls are more likely to show the inattentive presentation, quietly drifting off in class rather than climbing on the furniture, so teachers and parents raise fewer concerns. Many girls and women also learn to mask, compensating with extra effort, lists and late nights until university, a new job or parenthood removes the scaffolding that was holding things together. The CDC and the 2021 World Federation of ADHD consensus statement led by Stephen Faraone both note that women are typically diagnosed years later than men, often only after their own child is assessed.

What a real diagnostic assessment involves

In the UK, NICE guideline NG87 sets out that a diagnosis should be made by a specialist, not a single screening questionnaire in a GP surgery. It should include a full developmental and psychiatric history, direct observation or reports from more than one setting, and a check for coexisting conditions, with input from family members, partners or teachers where relevant. GPs use tools like this one mainly to decide whether a referral is warranted.

In the US, the CDC and the American Academy of Pediatrics describe a similar process: standardised rating scales completed by parents and teachers (or the person themselves and someone who knows them well, for adults), a clinical interview, a review of school or work records, and a search for alternative explanations. DSM-5 criteria require several symptoms present before age 12, lasting at least 6 months, and causing impairment in two or more settings such as home, school, work or relationships.

Adult vs child screening tools compared

Next steps if your score is flagged

• Write down examples. Specific moments (a missed deadline, a lost school report, a friendship strained by interrupting) are far more useful to a clinician than a single number.
• Book a GP or paediatrician appointment. Bring your ASRS or Vanderbilt answers; most clinicians welcome a completed screener as a starting point.
• Ask about waiting times and options. NHS ADHD assessment waits vary widely by area; some people also see a private specialist for a faster route while staying on the NHS list.
• Rule out look-alikes first. Poor sleep, anxiety, depression, thyroid problems and some medications can all mimic attention and hyperactivity symptoms.

Our related reads go deeper on causes and symptoms, treatment options and diet and exercise.

A short note from me: I built the domain and settings breakdown on this page because so many "ADHD test" quizzes online reduce everything to one score. Real symptoms live in specific rooms of your life, at your kitchen table, in a classroom, in a work meeting, and seeing where they show up is often more useful than the number itself.

Frequently asked questions

Can this ADHD test diagnose me?

No. This is a screening tool, not a diagnostic one. The ASRS v1.1 and Vanderbilt-style items are designed to flag when symptoms are common enough to be worth a proper assessment, not to replace one. Only a qualified clinician, following a structured interview and developmental history, can diagnose ADHD.

What is the ASRS and is it official?

The Adult ADHD Self-Report Scale (ASRS v1.1) was developed by Ronald Kessler and colleagues with the World Health Organization and first published in Psychological Medicine in 2005. Its six-item Part A is the most widely used adult ADHD screener in primary care research worldwide.

How is the child ADHD quiz scored?

It follows the structure of the NICHQ Vanderbilt Assessment Scale and DSM-5 criteria: 9 inattention and 9 hyperactive-impulsive items rated 0 to 3. Scoring 2 or 3 (Often or Very often) on 6 of the 9 items in a domain meets that domain's threshold; for 17-year-olds the DSM-5 lowers this to 5 of 9. A result also needs impairment in two or more settings, such as home, school and friendships.

Why are girls and women under-diagnosed with ADHD?

Girls more often show the inattentive presentation, daydreaming and quietly losing focus rather than visibly disrupting a classroom, so teachers and parents are less likely to flag them. Many mask symptoms through extra effort, which hides difficulty until workload or independence increases in the teenage years or adulthood. Research summarised by the CDC and by Faraone et al. (2021) links this to later average diagnosis ages and higher rates of missed or misdiagnosed cases in women.

What does an ADHD assessment involve in the UK?

NICE guideline NG87 recommends a full clinical assessment by a specialist (psychiatrist, paediatrician or specially trained practitioner), covering developmental history from childhood, symptoms in multiple settings, a review for other conditions that can look similar, and often input from family, partners or teachers. It is not a single questionnaire or a quick GP appointment; the GP's role is usually to refer on if a screen like this one, or ongoing difficulties, suggest it is worth pursuing.

What does an ADHD assessment involve in the US?

US evaluations, guided by American Academy of Pediatrics and CDC recommendations, typically combine parent and teacher (or self and informant, for adults) rating scales, a clinical interview, review of school or work history, and a check for other explanations such as anxiety, learning differences or sleep problems. Diagnosis under DSM-5 requires several symptoms before age 12, present for at least 6 months, and impairment in two or more settings.

Is ADHD becoming more common, or are we just testing more?

Diagnosed prevalence has risen over the past two decades, but most researchers, including the World Federation of ADHD consensus led by Faraone et al. (2021), attribute this mainly to greater awareness, broader screening and reduced stigma rather than a true rise in underlying rates, which have stayed fairly stable at around 5% in children and 2.5% in adults worldwide.