If you've looked into getting assessed for adult ADHD — or just searched "adult ADHD test" — you've almost certainly run into the same six questions, over and over. Trouble wrapping up the final details of a project. Difficulty getting things in order. Problems remembering appointments. They appear on clinic intake forms, in research studies, and on screening sites like this one.
Those six questions are the Adult ADHD Self-Report Scale, version 1.1 — Part A, usually shortened to ASRS-v1.1. It's the most widely used adult ADHD screening tool in the world, and it has an unusual pedigree: it was developed with the World Health Organization by some of the most prominent researchers in psychiatric epidemiology. This article explains where the ASRS comes from, how its slightly unusual scoring actually works, what the validation research says about its accuracy, and — just as important — what a six-question checklist can and cannot tell you.
Where the ASRS comes from
The ASRS was developed in the early 2000s by a workgroup that included Dr. Ronald C. Kessler of Harvard Medical School and Dr. Lenard Adler of NYU, in collaboration with the World Health Organization. The context matters: at the time, ADHD was still widely treated as a childhood condition, and there was no standard, validated way to screen for it in adults. Existing checklists were written around how ADHD looks in children — a poor fit, since adult symptoms shift toward disorganization, forgetfulness, and inner restlessness rather than visible hyperactivity. (For what that adult picture looks like in practice, see what is adult ADHD.)
The full instrument, published in 2005 in Psychological Medicine (Kessler et al., 2005), contains 18 questions mapping onto the 18 diagnostic symptom criteria for ADHD, rephrased for adult life. From those 18, the researchers used statistical analysis to identify the subset of questions that best predicted an actual ADHD diagnosis, validated against clinical interviews in a US general-population sample. Six questions emerged — and, somewhat counterintuitively, this short Part A screener performed at least as well as the full 18-item version at identifying likely cases. That's why the six-question Part A became the standard screener: maximum signal, minimum burden.
The six questions and what they're probing
The ASRS-v1.1 Part A asks how often, over the past six months, each of the following has applied to you:
- Trouble wrapping up the final details of a project, once the challenging parts are done
- Difficulty getting things in order when a task requires organization
- Problems remembering appointments or obligations
- Avoiding or delaying getting started on tasks that require a lot of thought
- Fidgeting or squirming when you have to sit for a long time
- Feeling overly active and compelled to do things, "like you were driven by a motor"
Each is answered on a five-point frequency scale: Never, Rarely, Sometimes, Often, Very Often.
Notice the design. The first four questions target the inattentive/executive side — follow-through, organization, memory, task initiation — while the last two target hyperactivity and inner restlessness. That weighting is deliberate: in adults, the inattentive symptoms are usually the more persistent and impairing ones, while overt hyperactivity tends to fade or turn inward with age. (If you're curious about that split, inattentive vs. hyperactive ADHD goes deeper.)
Also worth noticing: none of the questions ask "do you have trouble paying attention?" in the abstract. They ask about concrete, recognizable situations — the project that's 90% done and stalls, the appointment that evaporated from memory. That concreteness is part of why the screener works: people are more accurate about specific behaviors than about global self-judgments.
How the scoring works (it's not a simple total)
Here's where the ASRS differs from most quizzes you've taken. It is not scored by adding up points. Instead, each question has its own threshold — on the original paper form, certain answer boxes are shaded, which is why this is called "shaded box" scoring:
- Questions 1–3: an answer of Sometimes, Often, or Very Often counts as a positive (shaded) response.
- Questions 4–6: only Often or Very Often counts.
Your result is simply the number of shaded responses, from 0 to 6. The established cut-point is four or more: in the validation research, adults with 4+ shaded responses had symptoms highly consistent with adult ADHD and were flagged as warranting a full clinical evaluation.
Why the two different thresholds? Because the questions differ in how normal an occasional "yes" is. Nearly everyone sometimes delays a mentally demanding task, so question 4 only counts at "Often" — the behavior has to be frequent before it signals anything. But answering even "Sometimes" to chronic problems with follow-through, organization, or appointments turned out to be statistically meaningful. The thresholds were set empirically, question by question, based on what actually predicted a diagnosis — not by a tidy rule.
This is also why you can't compare an ASRS result to a friend's "score out of 24" on some other quiz. A 4 on the ASRS means four questions crossed their thresholds — a categorically different thing from four points.
How accurate is it?
For a screening tool, accuracy comes down to two numbers: sensitivity (how many true cases it catches) and specificity (how many non-cases it correctly clears).
In the original 2005 validation, the six-question screener showed strong overall classification accuracy against diagnoses made by clinicians. A follow-up study in a large managed-care sample (Kessler et al., 2007) found the screener's specificity to be extremely high — above 99% — with more moderate sensitivity, in the range of roughly two-thirds of true cases detected at the standard threshold.
In plain English, that profile means:
- A positive result (4+) is a strong signal. With specificity that high, few people without ADHD-consistent symptoms cross the threshold. If you score 4 or more, that's genuinely worth following up on — it's not a quiz being generous.
- A negative result is reassuring but not airtight. Moderate sensitivity means the screener misses a meaningful fraction of true cases. Someone can have ADHD and score below 4 — particularly people who've built heavy coping systems, or whose symptoms don't match the six sampled behaviors. This pattern is one reason ADHD in some groups, including many women, went under-recognized for decades; ADHD in women covers that story.
The ASRS has since been validated across many languages, countries, and clinical settings, and it remains the default adult screener in both research and primary care. (A newer variant, sometimes called the ASRS-5, was later developed to align with updated DSM-5 criteria and uses a different item set and scoring — but the v1.1 six-question screener remains the most widely used and cited version.)
What the ASRS cannot do
This part deserves equal billing. The ASRS-v1.1 is a screener, not a diagnostic test — and the difference isn't bureaucratic fine print.
An ADHD diagnosis requires things no questionnaire can assess: evidence that symptoms began in childhood, impairment across multiple settings, and — critically — the ruling out of look-alikes. Anxiety, depression, sleep disorders, thyroid problems, and plain chronic sleep deprivation can all produce inattention, forgetfulness, and restlessness that would light up an ASRS. The screener measures whether the pattern is present; a clinician determines what's causing it. (What that full evaluation actually involves — history, interviews, rating scales, differential diagnosis — is laid out in how ADHD is diagnosed.)
It's also self-report and time-boxed: it reflects how you perceive your own last six months. An unusually chaotic or unusually structured stretch of life can nudge answers in either direction.
Used properly, though, the ASRS does exactly what a good screener should: it converts a vague, heavy question — "could I have ADHD?" — into a concrete, evidence-based answer to a smaller question: "is this worth a professional's time?" A 4+ result, brought to a doctor's appointment, is a far stronger starting point than "I saw a video and I relate to it."
Take it yourself
Our free adult ADHD screener is a faithful implementation of the ASRS-v1.1 Part A — the same six questions, the same five-point scale, the same shaded-response thresholds and 4+ cut-point from the published instrument. It takes about two minutes, your answers never leave your browser, and you'll get your shaded-response count with an explanation of what it does and doesn't mean.
Whatever your result: a screener is a first step, not a verdict. And if you're struggling and it feels urgent, please reach out — call or text 988 (US Suicide & Crisis Lifeline), text HOME to 741741, or visit findahelpline.com.
This article is educational and is not a substitute for professional care. Only a qualified clinician can diagnose ADHD. Source: Kessler, R. C., et al. (2005), Psychological Medicine, 35(2), 245–256; Kessler, R. C., et al. (2007), International Journal of Methods in Psychiatric Research, 16(2), 52–65.