There is no single adult ADHD test. The closest thing is a validated screener such as the Adult ADHD Self-Report Scale (ASRS), developed with the World Health Organization, whose six core questions take a few minutes and tell you whether an evaluation is worth pursuing. A diagnosis takes a clinician who checks childhood history, more than one area of life, real impairment, and the conditions that look like ADHD.¹²

Adult ADHD is a neurodevelopmental pattern that many people first meet as a verdict on their character: lazy, careless, not living up to potential. That verdict causes harm of its own, and a screener can be the first thing that interrupts it. But anxiety, depression, trauma, poor sleep, heavy substance use and autism produce many of the same complaints, so a positive screen is a reason to be assessed, not an answer. Where autism overlaps, the answer is harder to reach and more worth getting right.

What adult ADHD is, and what changed in 2013

ADHD is a persistent pattern of inattention, hyperactivity-impulsivity, or both, that begins in childhood and gets in the way of daily life. The diagnostic criteria list eighteen symptoms, nine in each of the two domains.² DSM-5, published in 2013, made four changes that matter for adults. People 17 and older now need five symptoms in a domain rather than six. Several symptoms must have been present before age 12, instead of before age 7. Several symptoms, rather than the impairment, must show up in two or more settings, such as work and home. And the impairment only has to reduce the quality of social, school or work functioning, rather than meet the older bar of clinically significant impairment. The old subtypes were renamed “presentations” (predominantly inattentive, predominantly hyperactive-impulsive, or combined) because a person’s mix of symptoms often shifts over a lifetime.³

One claim in the earlier version of this page needs correcting: DSM-5 did not create adult ADHD. The 1968 DSM-II called the condition “hyperkinetic reaction of childhood” and said the behavior “usually diminishes by adolescence.” By the 1990s the field had recognized that it often persists, and DSM-IV in 1994 added examples of difficulty at work. What 2013 changed was the adult threshold, the onset age and the examples, which made adult cases easier to recognize.⁴³

In adults, hyperactivity usually turns inward. Visible motor restlessness tends to fade with age,⁴ and the adult checklist asks instead about feeling restless or fidgety and having trouble unwinding.² Inattention shows up as unfinished final details, forgotten appointments, disorganized paperwork and the long delay before starting anything that needs sustained thought. Those happen to be four of the six screener questions.²

How common is it? In the U.S. National Comorbidity Survey Replication, estimates based on clinicians’ follow-up interviews put current ADHD at 4.4% of adults aged 18 to 44, and most of those cases were untreated.⁵ A 2023 federal survey found that 6.0% of U.S. adults, about 15.5 million people, reported a current diagnosis, and roughly half had been diagnosed at 18 or older.⁶ More diagnosis is not the same as more ADHD. A meta-regression of 135 studies spanning three decades found no rise in the share of children who meet criteria when standardized diagnostic methods are used.⁷

The biology is real but not simple. Twin, family and adoption studies put heritability at about 74%, and genetic studies show that individual risk variants each have very small effects.⁸ Executive-function weaknesses in working memory, response inhibition and planning show up on average, but a meta-analysis of 83 studies found medium effect sizes and found that the deficits are not universal among people with ADHD. Its authors concluded that these weaknesses are “neither necessary nor sufficient” to explain every case.⁹

The oldest misreading: ADHD as a defect of character

The moral reading of attention problems is older than the diagnosis. In 1902 the London pediatrician George Frederic Still gave the Goulstonian Lectures to the Royal College of Physicians, published in The Lancet that April, on children with an “abnormal defect of moral control,” which he defined as the control of action “in conformity with the idea of the good of all.”¹⁰⁴ Still’s lectures are often treated as the starting point of ADHD’s medical history, but the children he described showed a wide range of behavior problems, and many would probably meet today’s criteria for conduct disorder or oppositional defiant disorder. They are an ancestor of the diagnosis, not a description of it.⁴ Yet the frame he named has lasted. Attention gets treated as a moral achievement, and its failure as a sign of weak will.

Adults who reach an evaluation in their thirties or forties have usually absorbed that frame. Teachers, parents, bosses and partners said it first; by adulthood it is an inner voice. Seen from a depth-psychology angle, that voice can organize a life as much as the attention problem does. People overprepare so they will not be caught out, procrastinate to postpone the moment of judgment, leave mail unopened, or quit before they can fail. Anxiety and depression are common companions. In the national survey above, adult ADHD was highly comorbid with other disorders, and many people had received treatment for those conditions while the ADHD itself went untreated.⁵

Emotional dysregulation is not one of the eighteen symptoms, yet a 2014 review in the American Journal of Psychiatry concluded that it is common in ADHD across the lifespan and a major contributor to impairment.¹¹ The phrase “rejection sensitive dysphoria,” which an older post on this site described as a co-occurring condition, is not a DSM-5 diagnosis. Sharp sensitivity to criticism is real and familiar in clinic, and it is probably better understood as part of ADHD’s emotional side, often sharpened by years of correction, than as a separate disorder.

Other problems travel with ADHD. A meta-analysis of 29 studies found that 23.1% of people in treatment for substance use disorders met criteria for ADHD, almost one in four.¹² In three studies summarized by a 2017 review, 43% to 80% of adults with ADHD had insomnia, and the authors recommend assessing and treating both.¹³

What an adult ADHD test can and cannot tell you

A widely used adult screener is the ASRS, developed with the World Health Organization by a workgroup that included Lenard Adler, Ronald Kessler and Thomas Spencer. The full checklist has eighteen questions that track the DSM-IV symptom list. Six of them, Part A, are the screener. They ask how often, over the past six months, you have trouble wrapping up the final details of a project, getting things in order and remembering appointments; how often you put off tasks that need a lot of thought; and how often you fidget during long stretches of sitting or feel overly active, as if driven by a motor. On the official form, four or more marks in the darkly shaded boxes mean symptoms “highly consistent with ADHD in adults” and that further investigation is warranted. The same form tells clinicians to review impairment at work, at home and socially, and to look for symptoms in childhood.²¹

In the 2005 validation against blind clinical interviews of 154 survey respondents, the six-question screener had a specificity of 99.5% and a sensitivity of 68.7%. It rarely flagged people who did not have ADHD, but it missed about three in ten who did.¹ A DSM-5 version, the ASRS-5, was published in 2017. It was built with a machine-learning method and then checked in a separate clinical sample. In general-population data it reached 91.4% sensitivity and 96.0% specificity. Even so, its positive predictive value there was 67.3%: at typical population prevalence, about one in three people who screen positive would not meet criteria on interview. Among patients seeking evaluation at a specialty adult ADHD program, specificity fell to 74.0%.¹⁴

So a positive screen means “get evaluated,” not “you have ADHD,” and a negative screen does not rule it out. Most of what turns up when you search for an adult ADHD test online is neither of these instruments. The 30-question quiz that used to sit on this page was one example: built from the diagnostic criteria, never tested, with no validated cutoff. Social media adds noise: when clinicians rated the 100 most popular TikTok videos about ADHD in a 2022 study, 52 were misleading and only 21 were useful.¹⁵ If you want to try a screener, use the official ASRS v1.1 symptom checklist and bring the completed form to an appointment.

Five questions get closer to what an evaluator will ask than any quiz score:

• Was it there before 12? Several symptoms should have been present in childhood, even if nobody named them at the time. Old report cards, teacher comments and a parent’s memory help.³²
• Does it show up in more than one setting? Symptoms that appear only at one job or in one relationship suggest another explanation.³
• Is it there when you are not drinking or using heavily? In one long-term study, the most common reason apparent late-onset cases were ruled out was that the symptoms occurred only during heavy substance use.¹⁶
• Has it cost you something? The criteria require that symptoms reduce the quality of work, school or social life, not only that they are frustrating.³
• Is there a better explanation? Anxiety, depression, trauma, bipolar disorder, obsessional thinking, sleep problems and autism all need to be considered.

Why a high score is not a diagnosis

Attention suffers under many kinds of strain, which is one reason ADHD checklists flag people who do not have ADHD. Research on adult-onset cases shows the problem from two sides. In the Dunedin study, which followed 1,037 New Zealanders born in 1972 and 1973 to age 38, 90% of adults who met ADHD criteria had no history of childhood ADHD. They also lacked the neuropsychological deficits and the polygenic risk seen in the childhood cases.¹⁷ That raised the possibility of an adult-onset condition.

The Multimodal Treatment Study of Children with ADHD (MTA) then looked more closely. Researchers followed 239 people without childhood ADHD through eight assessments from about age 10 to age 24, drawing on parent, teacher and self-reports. About 95% of those who screened positive on symptom checklists were excluded from a late-onset diagnosis once the full history was reviewed. The researchers found no adult-onset ADHD that occurred apart from a complex psychiatric history, and they warned that false-positive late-onset cases are common without careful assessment.¹⁶ None of this means adults who present with ADHD symptoms are imagining them. It means childhood history carries weight, and that a good evaluator is looking for whatever explains the whole picture best.

The usual look-alikes:

• Anxiety. Constant worry makes concentration hard, and anxiety disorders also co-occur with ADHD. The overlap is covered in anxiety disorders and ADHD.
• Trauma. Hypervigilance and dissociation pull attention away from the task in front of you. The relationship runs both ways. In a meta-analysis of 22 studies, people with ADHD had 2.9 times the risk of PTSD, and people with PTSD had 1.7 times the risk of ADHD.¹⁸ The article on how PTSD and ADHD overlap goes further.
• Bipolar disorder. Hypomania brings distractibility, fast speech and impulsive decisions, but it comes in episodes, while ADHD is a more constant, long-standing pattern. See bipolar disorder and ADHD for how the two are told apart.
• Obsessional thinking. Someone with purely obsessional OCD can look distracted because intrusive thoughts and mental checking are using up their attention.
• Depression, sleep and substances. Slowed thinking, short nights and heavy use all degrade attention, and insomnia and substance use disorders are also common alongside ADHD itself.¹³¹²

No brain test settles the question. A meta-analysis of nine EEG studies in children and adolescents concluded that an elevated theta/beta ratio, reported in many ADHD studies, “cannot be considered a reliable diagnostic measure,” though it may carry prognostic value for a subgroup.¹⁹ And because executive-function deficits are not universal in ADHD, a normal score on a computerized attention test does not rule it out.⁹ The diagnosis is clinical: a careful history, information from people who knew you as a child, rating scales, and judgment about the alternatives.

ADHD and autism: what AuDHD means

AuDHD is informal shorthand for being both autistic and ADHD. It is not a diagnosis. Clinically, a person receives two diagnoses, autism spectrum disorder and ADHD. Until 2013 the American manual did not allow it, because autism was listed among the conditions that ruled out an ADHD diagnosis. DSM-5 removed that exclusion.³

How often do they overlap? The earlier version of this page said 60% to 70% of autistic people have ADHD. A range like that does appear in the literature, but it is not what pooled data show. A 2022 article in Frontiers in Psychiatry opens with “50 to 70%” and then asks whether the attention problems being counted in autistic patients are always ADHD at all.²⁰ The meta-analyses come out lower. A 2019 Lancet Psychiatry meta-analysis of 96 studies put ADHD at 28% of autistic people, with higher figures in clinic samples than in population and registry samples.²¹ A 2021 meta-analysis limited to ADHD in autism found 38.5% current and 40.2% lifetime prevalence.²² Looking the other way, about 21% of children and adolescents with ADHD meet criteria for autism.²³ The overlap is common, closer to one in three than two in three, and it depends heavily on who is studied.

ADHD is often recognized first. In a national U.S. survey covering 1,496 autistic children, about 20% had been diagnosed with ADHD before autism, and those children received the autism diagnosis about three years later than the others.²⁴ Adults who were diagnosed with ADHD young, and who find that the label explains their distractibility but not their need for sameness, their sensory overload or their exhaustion after socializing, are worth assessing for autism as well. The article on recognizing autism in adulthood describes what that can look like.

The two conditions can pull attention in different directions. Monotropism, a theory developed by Dinah Murray, Mike Lesser and Wenn Lawson and first published in 2005, holds that autistic attention tends to gather intensely around a few interests at a time, and that this way of allocating attention is central to autism.²⁵ ADHD attention is often described as interest-driven too, but more easily captured by whatever is new. People with both often describe wanting routine and being bored by it. Those accounts are familiar in clinic, but they are descriptions, not a validated profile. The post on monotropism as a way to understand autistic attention goes into the theory.

Masking shows up in both groups. In a 2024 Dutch study, adults with ADHD reported more camouflaging than a comparison group, though less than autistic adults, and autistic traits rather than ADHD traits predicted how much people camouflaged.²⁶ The combination also appears to carry extra costs. In a registry study of 724 autistic adults, those who rated themselves as having more ADHD symptoms also reported less independence in daily living and lower quality of life.²⁷

Autism screeners have the same limits as the ASRS, and they are less accurate in the people who actually seek assessment. The Autism-Spectrum Quotient (AQ) is a 50-item questionnaire scored from 0 to 50. In its 2001 development study, 80% of adults with Asperger syndrome or high-functioning autism scored 32 or above, compared with 2% of controls.²⁸ But among 476 adults referred to a national specialist service, AQ scores did not significantly predict who received a diagnosis. Specificity was 0.29, and 64% of people who scored below the cutoff turned out to be autistic. Generalized anxiety appeared to inflate scores.²⁹ The 80-question Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R) reported 97% sensitivity and 100% specificity in its validation study, which compared 201 adults already diagnosed with autism with 578 comparison participants.³⁰ Sorting real referrals, many of whom are anxious, traumatized or ADHD, is a harder task, so a high score on either screener is a reason to ask the question, not an answer.

What this looks like in therapy

Good care starts with an assessment that takes the look-alikes seriously: a developmental history, input from a parent, partner or old school records where possible, standardized rating scales, and screening for anxiety, depression, trauma, substance use and sleep. When autism is also a question, both should be assessed together.

Therapy for adult ADHD then tends to work on two levels. The first is practical. Cognitive behavioral therapy adapted for ADHD teaches planning, prioritizing, breaking tasks into steps, managing distraction and catching the avoidant thoughts that feed procrastination. In a 2010 randomized trial of 86 adults who were already taking medication but still had significant symptoms, twelve sessions of CBT outperformed an attention-matched control of relaxation with educational support. Treatment responders on the clinician global rating were 53% versus 23%, and responders kept their gains at 6 and 12 months.³¹ A 2017 meta-analysis of 32 studies found small-to-medium effects compared with control groups, and smaller effects against active controls.³² A Cochrane review published in 2018 found only low-quality evidence that CBT helps in the short term and noted the lack of long-term follow-up, so the fair verdict is probably helpful, with low certainty.³³ Mindfulness-based approaches show possible benefits, but a 2020 meta-analysis could pool only ten studies for inattention.³⁴

The second level is the story. Many adults arrive with decades of what they take as evidence that they are lazy or unreliable. Part of the work is going back over that history with a new frame: which “failures” were symptoms, which were reasonable adaptations, and which were the protective strategies, such as perfectionism, overwork, people-pleasing and avoidance, that formed around shame. Parts-based therapy offers one useful language for this. It treats the harsh inner critic as a part that formed to prevent humiliation, not as the truth about the person. That is a way of working with shame and self-blame, not a treatment for ADHD symptoms themselves.

Medication is the other main evidence-based option, and it is a medical decision. A 2018 network meta-analysis of 133 double-blind trials found that in adults, amphetamines, methylphenidate, bupropion and atomoxetine all outperformed placebo on clinicians’ ratings at around 12 weeks, with differences in how well each was tolerated.³⁵ Whether any of them fits you is a conversation for a prescriber who knows your full history.

Work supports matter as well. The Americans with Disabilities Act has no list of qualifying conditions, so ADHD is not automatically a disability under it. The law covers a person whose impairment substantially limits one or more major life activities. When ADHD does that, the Job Accommodation Network lists options such as a quiet workspace, noise-cancelling headphones or white noise, uninterrupted work time, written to-do lists and help with prioritizing.³⁶ For someone who is also autistic, the work is adjusted: routines loose enough to survive boredom, planned recovery time after social or sensory load, and dropping the goal of passing as neurotypical. Taproot’s page on autism therapy for adults and children describes the practice’s approach.

The strengths are worth naming without turning them into a sales pitch. In a 2019 interview study of successful adults with ADHD, researchers identified six themes they called cognitive dynamism, courage, energy, humanity, resilience and transcendence, with divergent thinking and hyperfocus among the sub-themes.³⁷ It was a qualitative study of people already doing well, so it describes possibilities, not promises. The aim of therapy is not to turn a person into someone else but to stop spending their energy on hiding and self-punishment.

Common questions about adult ADHD tests

Is there an online test that can diagnose adult ADHD?

No. Validated screeners such as the ASRS can tell you whether an evaluation is worth pursuing. Even the best version misses some people and, in general-population data, about one in three positive screens would not be confirmed on interview. A diagnosis requires a clinical evaluation of childhood history, current impairment and other explanations.

Can you have ADHD and autism at the same time?

Yes. Since DSM-5 in 2013, both can be diagnosed in the same person. Meta-analyses put ADHD at roughly 28% to 40% of autistic people, depending on the sample.

Can ADHD start in adulthood?

The criteria require several symptoms before age 12, though nobody may have noticed them then. Some cohort studies have found adults with ADHD symptoms and no childhood history, but one careful long-term study found that most apparent late-onset cases did not hold up: the symptoms were not impairing, occurred only with heavy substance use, or were better explained by another condition.

If the screener questions describe you, or you were diagnosed with ADHD years ago and something still does not fit, a careful evaluation and a therapist who understands both ADHD and autism can help sort out what is going on. Nothing on this page is a diagnosis or a substitute for a medical evaluation. Taproot’s page on therapy for ADHD and AuDHD describes how the practice works with both, or you can contact the office in Hoover with questions.

References

1. Kessler, R. C., Adler, L., Ames, M., Demler, O., Faraone, S., Hiripi, E., Howes, M. J., Jin, R., Secnik, K., Spencer, T., Ustun, T. B., & Walters, E. E. (2005). The World Health Organization Adult ADHD Self-Report Scale (ASRS): A short screening scale for use in the general population. Psychological Medicine, 35(2), 245–256. https://doi.org/10.1017/S0033291704002892
2. World Health Organization & Workgroup on Adult ADHD. (n.d.). Adult ADHD Self-Report Scale (ASRS-v1.1) symptom checklist. Retrieved November 8, 2026, from https://add.org/wp-content/uploads/2015/03/adhd-questionnaire-ASRS111.pdf
3. Epstein, J. N., & Loren, R. E. A. (2013). Changes in the definition of ADHD in DSM-5: Subtle but important. Neuropsychiatry, 3(5), 455–458. https://doi.org/10.2217/npy.13.59
4. Lange, K. W., Reichl, S., Lange, K. M., Tucha, L., & Tucha, O. (2010). The history of attention deficit hyperactivity disorder. ADHD Attention Deficit and Hyperactivity Disorders, 2(4), 241–255. https://doi.org/10.1007/s12402-010-0045-8
5. Kessler, R. C., Adler, L., Barkley, R., Biederman, J., Conners, C. K., Demler, O., Faraone, S. V., Greenhill, L. L., Howes, M. J., Secnik, K., Spencer, T., Ustun, T. B., Walters, E. E., & Zaslavsky, A. M. (2006). The prevalence and correlates of adult ADHD in the United States: Results from the National Comorbidity Survey Replication. American Journal of Psychiatry, 163(4), 716–723. https://doi.org/10.1176/ajp.2006.163.4.716
6. Staley, B. S., Robinson, L. R., Claussen, A. H., Katz, S. M., Danielson, M. L., Summers, A. D., Farr, S. L., Blumberg, S. J., & Tinker, S. C. (2024). Attention-deficit/hyperactivity disorder diagnosis, treatment, and telehealth use in adults: National Center for Health Statistics Rapid Surveys System, United States, October–November 2023. MMWR. Morbidity and Mortality Weekly Report, 73(40), 890–895. https://doi.org/10.15585/mmwr.mm7340a1
7. Polanczyk, G. V., Willcutt, E. G., Salum, G. A., Kieling, C., & Rohde, L. A. (2014). ADHD prevalence estimates across three decades: An updated systematic review and meta-regression analysis. International Journal of Epidemiology, 43(2), 434–442. https://doi.org/10.1093/ije/dyt261
8. Faraone, S. V., & Larsson, H. (2019). Genetics of attention deficit hyperactivity disorder. Molecular Psychiatry, 24(4), 562–575. https://doi.org/10.1038/s41380-018-0070-0
9. Willcutt, E. G., Doyle, A. E., Nigg, J. T., Faraone, S. V., & Pennington, B. F. (2005). Validity of the executive function theory of attention-deficit/hyperactivity disorder: A meta-analytic review. Biological Psychiatry, 57(11), 1336–1346. https://doi.org/10.1016/j.biopsych.2005.02.006
10. Still, G. F. (1902). The Goulstonian lectures on some abnormal psychical conditions in children: Lecture I. The Lancet, 159(4102), 1008–1013. https://doi.org/10.1016/S0140-6736(01)74984-7
11. Shaw, P., Stringaris, A., Nigg, J., & Leibenluft, E. (2014). Emotion dysregulation in attention deficit hyperactivity disorder. American Journal of Psychiatry, 171(3), 276–293. https://doi.org/10.1176/appi.ajp.2013.13070966
12. van Emmerik-van Oortmerssen, K., van de Glind, G., van den Brink, W., Smit, F., Crunelle, C. L., Swets, M., & Schoevers, R. A. (2012). Prevalence of attention-deficit hyperactivity disorder in substance use disorder patients: A meta-analysis and meta-regression analysis. Drug and Alcohol Dependence, 122(1–2), 11–19. https://doi.org/10.1016/j.drugalcdep.2011.12.007
13. Wynchank, D., Bijlenga, D., Beekman, A. T., Kooij, J. J. S., & Penninx, B. W. (2017). Adult attention-deficit/hyperactivity disorder (ADHD) and insomnia: An update of the literature. Current Psychiatry Reports, 19(12), Article 98. https://doi.org/10.1007/s11920-017-0860-0
14. Ustun, B., Adler, L. A., Rudin, C., Faraone, S. V., Spencer, T. J., Berglund, P., Gruber, M. J., & Kessler, R. C. (2017). The World Health Organization Adult Attention-Deficit/Hyperactivity Disorder Self-Report Screening Scale for DSM-5. JAMA Psychiatry, 74(5), 520–527. https://doi.org/10.1001/jamapsychiatry.2017.0298
15. Yeung, A., Ng, E., & Abi-Jaoude, E. (2022). TikTok and attention-deficit/hyperactivity disorder: A cross-sectional study of social media content quality. The Canadian Journal of Psychiatry, 67(12), 899–906. https://doi.org/10.1177/07067437221082854
16. Sibley, M. H., Rohde, L. A., Swanson, J. M., Hechtman, L. T., Molina, B. S. G., Mitchell, J. T., Arnold, L. E., Caye, A., Kennedy, T. M., Roy, A., Stehli, A., & the MTA Cooperative Group. (2018). Late-onset ADHD reconsidered with comprehensive repeated assessments between ages 10 and 25. American Journal of Psychiatry, 175(2), 140–149. https://doi.org/10.1176/appi.ajp.2017.17030298
17. Moffitt, T. E., Houts, R., Asherson, P., Belsky, D. W., Corcoran, D. L., Hammerle, M., Harrington, H., Hogan, S., Meier, M. H., Polanczyk, G. V., Poulton, R., Ramrakha, S., Sugden, K., Williams, B., Rohde, L. A., & Caspi, A. (2015). Is adult ADHD a childhood-onset neurodevelopmental disorder? Evidence from a four-decade longitudinal cohort study. American Journal of Psychiatry, 172(10), 967–977. https://doi.org/10.1176/appi.ajp.2015.14101266
18. Spencer, A. E., Faraone, S. V., Bogucki, O. E., Pope, A. L., Uchida, M., Milad, M. R., Spencer, T. J., Woodworth, K. Y., & Biederman, J. (2016). Examining the association between posttraumatic stress disorder and attention-deficit/hyperactivity disorder: A systematic review and meta-analysis. The Journal of Clinical Psychiatry, 77(1), 72–83. https://doi.org/10.4088/JCP.14r09479
19. Arns, M., Conners, C. K., & Kraemer, H. C. (2013). A decade of EEG theta/beta ratio research in ADHD: A meta-analysis. Journal of Attention Disorders, 17(5), 374–383. https://doi.org/10.1177/1087054712460087
20. Hours, C., Recasens, C., & Baleyte, J. (2022). ASD and ADHD comorbidity: What are we talking about? Frontiers in Psychiatry, 13, Article 837424. https://doi.org/10.3389/fpsyt.2022.837424
21. Lai, M.-C., Kassee, C., Besney, R., Bonato, S., Hull, L., Mandy, W., Szatmari, P., & Ameis, S. H. (2019). Prevalence of co-occurring mental health diagnoses in the autism population: A systematic review and meta-analysis. The Lancet Psychiatry, 6(10), 819–829. https://doi.org/10.1016/S2215-0366(19)30289-5
22. Rong, Y., Yang, C.-J., Jin, Y., & Wang, Y. (2021). Prevalence of attention-deficit/hyperactivity disorder in individuals with autism spectrum disorder: A meta-analysis. Research in Autism Spectrum Disorders, 83, Article 101759. https://doi.org/10.1016/j.rasd.2021.101759
23. Hollingdale, J., Woodhouse, E., Young, S., Fridman, A., & Mandy, W. (2020). Autistic spectrum disorder symptoms in children and adolescents with attention-deficit/hyperactivity disorder: A meta-analytical review. Psychological Medicine, 50(13), 2240–2253. https://doi.org/10.1017/S0033291719002368
24. Miodovnik, A., Harstad, E., Sideridis, G., & Huntington, N. (2015). Timing of the diagnosis of attention-deficit/hyperactivity disorder and autism spectrum disorder. Pediatrics, 136(4), e830–e837. https://doi.org/10.1542/peds.2015-1502
25. Murray, D., Lesser, M., & Lawson, W. (2005). Attention, monotropism and the diagnostic criteria for autism. Autism, 9(2), 139–156. https://doi.org/10.1177/1362361305051398
26. van der Putten, W. J., Mol, A. J. J., Groenman, A. P., Radhoe, T. A., Torenvliet, C., Agelink van Rentergem, J. A., & Geurts, H. M. (2024). Is camouflaging unique for autism? A comparison of camouflaging between adults with autism and ADHD. Autism Research, 17(4), 812–823. https://doi.org/10.1002/aur.3099
27. Yerys, B. E., McQuaid, G. A., Lee, N. R., & Wallace, G. L. (2022). Co-occurring ADHD symptoms in autistic adults are associated with less independence in daily living activities and lower subjective quality of life. Autism, 26(8), 2188–2195. https://doi.org/10.1177/13623613221112198
28. Baron-Cohen, S., Wheelwright, S., Skinner, R., Martin, J., & Clubley, E. (2001). The Autism-Spectrum Quotient (AQ): Evidence from Asperger syndrome/high-functioning autism, males and females, scientists and mathematicians. Journal of Autism and Developmental Disorders, 31(1), 5–17. https://doi.org/10.1023/A:1005653411471
29. Ashwood, K. L., Gillan, N., Horder, J., Hayward, H., Woodhouse, E., McEwen, F. S., Findon, J., Eklund, H., Spain, D., Wilson, C. E., Cadman, T., Young, S., Stoencheva, V., Murphy, C. M., Robertson, D., Charman, T., Bolton, P., Glaser, K., Asherson, P., . . . Murphy, D. G. (2016). Predicting the diagnosis of autism in adults using the Autism-Spectrum Quotient (AQ) questionnaire. Psychological Medicine, 46(12), 2595–2604. https://doi.org/10.1017/S0033291716001082
30. Ritvo, R. A., Ritvo, E. R., Guthrie, D., Ritvo, M. J., Hufnagel, D. H., McMahon, W., Tonge, B., Mataix-Cols, D., Jassi, A., Attwood, T., & Eloff, J. (2011). The Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R): A scale to assist the diagnosis of autism spectrum disorder in adults: An international validation study. Journal of Autism and Developmental Disorders, 41(8), 1076–1089. https://doi.org/10.1007/s10803-010-1133-5
31. Safren, S. A., Sprich, S., Mimiaga, M. J., Surman, C., Knouse, L., Groves, M., & Otto, M. W. (2010). Cognitive behavioral therapy vs relaxation with educational support for medication-treated adults with ADHD and persistent symptoms: A randomized controlled trial. JAMA, 304(8), 875–880. https://doi.org/10.1001/jama.2010.1192
32. Knouse, L. E., Teller, J., & Brooks, M. A. (2017). Meta-analysis of cognitive–behavioral treatments for adult ADHD. Journal of Consulting and Clinical Psychology, 85(7), 737–750. https://doi.org/10.1037/ccp0000216
33. Lopez, P. L., Torrente, F. M., Ciapponi, A., Lischinsky, A. G., Cetkovich-Bakmas, M., Rojas, J. I., Romano, M., & Manes, F. F. (2018). Cognitive-behavioural interventions for attention deficit hyperactivity disorder (ADHD) in adults. Cochrane Database of Systematic Reviews, 2018(3), Article CD010840. https://doi.org/10.1002/14651858.CD010840.pub2
34. Cairncross, M., & Miller, C. J. (2020). The effectiveness of mindfulness-based therapies for ADHD: A meta-analytic review. Journal of Attention Disorders, 24(5), 627–643. https://doi.org/10.1177/1087054715625301
35. Cortese, S., Adamo, N., Del Giovane, C., Mohr-Jensen, C., Hayes, A. J., Carucci, S., Atkinson, L. Z., Tessari, L., Banaschewski, T., Coghill, D., Hollis, C., Simonoff, E., Zuddas, A., Barbui, C., Purgato, M., Steinhausen, H.-C., Shokraneh, F., Xia, J., & Cipriani, A. (2018). Comparative efficacy and tolerability of medications for attention-deficit hyperactivity disorder in children, adolescents, and adults: A systematic review and network meta-analysis. The Lancet Psychiatry, 5(9), 727–738. https://doi.org/10.1016/S2215-0366(18)30269-4
36. Job Accommodation Network. (n.d.). Attention deficit/hyperactivity disorder (ADHD). Retrieved November 8, 2026, from https://askjan.org/disabilities/Attention-Deficit-Hyperactivity-Disorder-AD-HD.cfm
37. Sedgwick, J. A., Merwood, A., & Asherson, P. (2019). The positive aspects of attention deficit hyperactivity disorder: A qualitative investigation of successful adults with ADHD. ADHD Attention Deficit and Hyperactivity Disorders, 11(3), 241–253. https://doi.org/10.1007/s12402-018-0277-6