ADHD Test for Adults (ASRS-v1.1)
The ASRS (Adult ADHD Self-Report Scale) is an 18-item self-report questionnaire that screens adults for ADHD by rating how often each DSM symptom occurred over the past 6 months. Its first 6 items form the Part A screener, where 4 or more responses in the shaded range is a positive screen.
ASRS Part A Screener Interpreter
Symptom pattern is consistent with adult ADHD and warrants a full clinical evaluation. A positive screen is not a diagnosis.
Count how many of the 6 Part A items fall in the shaded (elevated frequency) range. 4 or more is a positive screen.
| Part A items in the shaded range | Interpretation |
|---|---|
| 4+ | Positive screenSymptom pattern is consistent with adult ADHD and warrants a full clinical evaluation. A positive screen is not a diagnosis. |
| 0–3 | Negative screenBelow the 4-item threshold. In the 2005 validation the screener's sensitivity was 68.7%, so a negative screen does not rule out ADHD when symptoms are present. |
Kessler RC et al. Psychol Med. 2005;35(2):245-256 (PMID 15841682); ≥4 of 6 rule as applied in Silverstein et al. Fam Pract. 2018 (PMID 29177453). Educational reference only — not a diagnostic tool.
For reference only — not an assessment, diagnosis, or medical advice. This page provides scoring reference material; interpretation and clinical decisions rest with a qualified clinician.
The ASRS-v1.1 is the World Health Organization-endorsed screening tool for adult ADHD, developed by Kessler et al. (2005). The 6-item Part A screener demonstrated sensitivity of 68.7% and specificity of 99.5% against blind DSM-IV clinical diagnoses in a community sample. Full 18-item version maps to DSM-5-TR inattention and hyperactivity/impulsivity symptom domains.
ADHD in Adults: What to Expect
Adult ADHD affects an estimated 3–5% of adults across higher-income countries; a WHO World Mental Health Survey of ten countries found a pooled average prevalence of 3.4% (range 1.2–7.3%), with lower estimates in lower-income countries (Fayyad et al., 2007). Despite this, a substantial proportion go undiagnosed, particularly women and individuals from underrepresented groups, who often present with primarily inattentive rather than hyperactive symptoms. ADHD is a neurodevelopmental disorder that persists from childhood, though presentations evolve significantly with age: overt hyperactivity typically decreases while inattention, executive dysfunction, and emotional dysregulation often remain prominent or intensify.
In adults, ADHD commonly presents as chronic difficulty with sustained attention, task completion, organization, and time management; impulsive decision-making; emotional dysregulation; inner restlessness; and difficulty with long-term planning. Rejection Sensitive Dysphoria (RSD), intense emotional pain in response to perceived criticism or failure, is a clinically significant feature in many adults with ADHD not yet included in formal diagnostic criteria.
What the ASRS measures
The ASRS includes 18 questions about the frequency of recent DSM Criterion A symptoms of adult ADHD, spanning the inattention and hyperactivity/impulsivity domains. The full 18-item version maps to the DSM-5-TR symptom domains; the 6-item Part A screener was selected from the 18 questions by stepwise logistic regression to best match clinical classification (Kessler et al., 2005).
How to administer the ASRS
The ASRS is self-administered. You rate how often each symptom occurred over the past 6 months using a 5-point scale from Never to Very Often. Part A (items 1–6) is the screener; Part B (items 7–18) adds a fuller view of symptom frequency.
ASRS scoring and interpretation
The first 6 items (Part A) are the validated screener. 4+ items shaded = positive screen. Responses in the shaded zone (Often or Very Often for most items) count as positive indicators.
ASRS-v1.1 © New York University and President and Fellows of Harvard College. The 18-item Symptom Checklist requires a licence from NYU for electronic and commercial use; the 6-item ASRS screener is available for clinical and commercial use with attribution. Positive ASRS screen does not diagnose ADHD, full evaluation required. DSM-5-TR requires ≥5 symptoms per domain (adults ≥17) with onset before age 12 and cross-setting impairment.
Psychometric properties
- Screening accuracy. Against blind clinical DSM-IV diagnoses in 154 respondents from the US National Comorbidity Survey Replication, the unweighted 6-item screener outperformed the full 18-item ASRS: sensitivity 68.7% v. 56.3%, specificity 99.5% v. 98.3%, total classification accuracy 97.9% v. 96.2% (Kessler et al., 2005).
- Health-plan sample. In 668 health plan subscribers, the screener had an area under the ROC curve of 0.90 against clinician diagnoses; internal consistency was 0.63–0.72 and test-retest reliability 0.58–0.77 (Kessler et al., 2007).
- Test-retest in non-ADHD adults. In 104 primary care patients who screened negative, the screener total score was stable over time (Spearman's rho = 0.78; ICC = 0.75) (Silverstein et al., 2018).
Limitations
- Screening, not diagnosis. A positive screen warrants a full evaluation; DSM-5-TR diagnosis also requires onset before age 12 and impairment across settings, which the ASRS does not assess.
- Moderate sensitivity. With 68.7% sensitivity in the 2005 validation, roughly 1 in 3 adults with ADHD may screen negative.
- Self-report bias. Responses can be shaped by mood, stress, insight and coping strategies, and conditions such as anxiety, depression, PTSD and sleep disorders share overlapping symptoms.
- Validation populations. The cut-point was calibrated in US community and health-plan samples against DSM-IV criteria.
Adult ADHD Presentations
DSM-5-TR recognizes three presentations. Adults most commonly have Predominantly Inattentive or Combined presentations. Hyperactive-Impulsive presentation alone is less common in adults.
ADHD vs Common Mimics
Many conditions share symptoms with ADHD. Differential diagnosis and comorbidity assessment are critical components of ADHD evaluation. The table below outlines the most frequent overlapping conditions.
| Condition | Shared features with ADHD | Key distinguishing features |
|---|---|---|
| Generalized anxiety disorder | Difficulty concentrating, restlessness, sleep disturbance | Anxiety is the primary driver of concentration problems; worries are future-oriented and ego-dystonic. ADHD concentration failures are situational (boredom, low novelty). |
| Major depression | Low energy, poor concentration, motivation difficulties | Episodic course; concentration impairment fluctuates with mood. ADHD concentration difficulties are chronic and cross-situational from early development. |
| Bipolar disorder | Elevated impulsivity, decreased need for sleep (hypomania), distractibility | Episodic; between episodes executive function may normalize. ADHD is persistent and onset is in childhood. |
| PTSD | Hypervigilance, concentration difficulties, emotional dysregulation | Symptoms tied to trauma history and triggered by reminders. ADHD onset precedes trauma exposure in most cases. |
| Sleep disorders | Inattention, fatigue, poor memory | Symptoms may remit with treatment of the primary sleep disorder. ADHD inattention is present even when well-rested. |
| Autism spectrum conditions | Executive dysfunction, sensory sensitivities, social difficulties | Communication and social reciprocity differences are more central; stimming/restricted interests distinguishing. High comorbidity — both can co-occur. |
Adult ADHD Assessment Tools
A comprehensive ADHD evaluation draws on tools serving different purposes: initial screening, detailed symptom rating, and structured diagnostic interviewing. No single tool is sufficient for diagnosis; the ASRS Part A is designed for case-finding, not diagnostic confirmation.
| Tool | Type | Purpose | Notes |
|---|---|---|---|
| ASRS-v1.1 Part A (6 items) | Self-report screener | Community/clinical case-finding | Sensitivity 68.7%, specificity 99.5% vs DSM-IV clinical diagnosis (Kessler et al., 2005); AUC 0.90 in a health-plan sample (Kessler et al., 2007). Binary positive/negative output. |
| ASRS-v1.1 Full (18 items) | Self-report symptom checklist | Symptom frequency across inattention and hyperactivity/impulsivity domains | Maps directly to DSM-5-TR Criterion A symptoms; used as a symptom-frequency checklist and dimensional severity supplement, not a standalone screen. |
| Conners' Adult ADHD Rating Scales (CAARS) | Self-report and observer rating | Broad symptom assessment; norm-referenced | Includes DSM-IV subscales and infrequency index; validated short and long forms. Observer version helps document cross-setting impairment. |
| DIVA 2.0 / DIVA-5 | Semi-structured diagnostic interview | Full diagnostic evaluation per DSM-IV/DSM-5 criteria | Covers current symptoms and childhood onset across multiple life domains; DIVA 2.0 validated across multiple language editions (Ramos-Quiroga et al., 2019); DIVA-5 is the DSM-5 update. |
| ADHD Rating Scale (ADHD-RS) | Clinician-administered | Symptom severity and treatment monitoring | Widely used in clinical trials; covers all 18 DSM symptoms with clinician prompts. |
| Wender Utah Rating Scale (WURS) | Self-report retrospective | Retrospective childhood symptom confirmation | Assesses presence of childhood ADHD symptoms in adults; useful adjunct when developmental history is unavailable. |
ADHD Outcome Monitoring in HiBoop
HiBoop supports measurement-based care for ADHD with the WFIRS-S, SNAP-IV, SWAN, Vanderbilt rating scales, and WURS, with automated scoring and tracking over time.
This library is an academic and clinical reference. A scale described here is not necessarily offered in HiBoop; each page says whether it is.
Frequently Asked Questions
What is the ASRS-v1.1 and how does it work?
The Adult ADHD Self-Report Scale (ASRS-v1.1) is an 18-item questionnaire developed by Ronald Kessler and colleagues in collaboration with the World Health Organization. You rate how often each symptom occurred over the past 6 months using a 5-point scale from Never to Very Often. The first 6 items form the validated Part A screener, where responses in the shaded zone (Often or Very Often for most items) count as positive indicators.
What does a positive ASRS screen mean?
A positive screen (4 or more shaded responses in Part A) indicates that your symptom pattern is consistent with adult ADHD and warrants a full clinical evaluation. A positive ASRS result is not a diagnosis — ADHD diagnosis requires a structured clinical interview, developmental history, and ruling out other conditions. Many adults with positive screens benefit significantly from evaluation and, if confirmed, from treatment.
Can adults have ADHD if they were never diagnosed as children?
Yes, though DSM-5-TR requires symptom onset before age 12 for an ADHD diagnosis. Many adults were never identified in childhood — particularly women and girls, who more often present with inattentive rather than hyperactive symptoms and are less frequently referred for evaluation. Retrospective developmental history and collateral information from parents or early school records can help establish childhood onset during an adult diagnostic evaluation.
How is adult ADHD different from childhood ADHD?
The core neurobiological features are the same, but adult presentation often looks quite different. Overt physical hyperactivity typically diminishes with age and manifests instead as inner restlessness, difficulty sitting through meetings, or a need to stay constantly busy. Inattention and executive dysfunction — time management, organization, task completion, and working memory — often remain prominent or increase in impact as adult responsibilities grow more complex.
What conditions are commonly mistaken for ADHD in adults?
Generalized anxiety, depression, bipolar disorder, PTSD, and sleep disorders all share significant symptom overlap with ADHD. Concentration difficulties, for example, occur across all of these. Crucially, ADHD also frequently co-occurs with these conditions — high comorbidity rates make thorough differential diagnosis and comorbidity assessment essential. A clinician familiar with adult ADHD presentations will evaluate for both primary ADHD and coexisting conditions.
What are effective treatments for adult ADHD?
Evidence-based treatments include stimulant medications (amphetamine salts and methylphenidate, both FDA-approved for adult ADHD), non-stimulant medications (atomoxetine, viloxazine, bupropion), and psychosocial interventions including CBT adapted for ADHD (targeting executive function, time management, and emotional regulation skills). Most adults with ADHD benefit most from a combination of medication and skills-based psychotherapy, particularly CBT.
Bill this assessment
The ADHD Test for Adults (ASRS-v1.1) qualifies for reimbursement under these CPT codes (US).
Using this assessment in practice
For clinicians
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For individuals
This page is a clinical reference, not a diagnostic tool. If you have concerns about your own symptoms, bring this information to a qualified mental health professional.
References
- 1.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. Psychol Med. 2005;35(2):245-56.View source
- 2.Kessler RC, Adler LA, Gruber MJ, et al. Validity of the World Health Organization Adult ADHD Self-Report Scale (ASRS) Screener in a representative sample of health plan members. Int J Methods Psychiatr Res. 2007;16(2):52-65.View source
- 3.Adler LA, Spencer T, Faraone SV, et al. Validity of pilot Adult ADHD Self-Report Scale (ASRS) to Rate Adult ADHD symptoms. Ann Clin Psychiatry. 2006;18(3):145-8.View source
- 4.Silverstein MJ, Alperin S, Faraone SV, et al. Test-retest reliability of the adult ADHD Self-Report Scale (ASRS) v1.1 Screener in non-ADHD controls from a primary care physician practice. Fam Pract. 2018;35(3):336-341.View source
Last reviewed: Jun 3, 2026
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