Neuropsychological testing for adults: what it includes, what it costs, and when an IQ test is enough

0 Quick Answer

A neuropsychological evaluation is a multi hour clinical assessment of cognition, mood and behaviour, performed by a licensed psychologist with specialist training, that ends in a diagnosis or a differential and a written report, and it is the right tool when the question is why, not where you stand. The American Academy of Clinical Neuropsychology's practice guidelines, published in The Clinical Neuropsychologist in 2007, volume 21, issue 2, pages 209 to 231, describe the components: a referral question, a clinical interview, review of records, standardized testing across cognitive domains, integration of the data, a written report and feedback to the client. The testing alone usually runs several hours, and one private practice whose fee page was read on September 19, 2026 commits 15 to 30 hours to each case and charges a flat 3,500 to 7,000 dollars.

The price range is wide because the provider matters. University training clinics, where supervised doctoral students perform the work, publish fees a tenth of private rates: the University of Iowa's Seashore Psychology Clinic lists adult ADHD, learning disorder and other diagnostic evaluations at 300 dollars flat on its clinic page, read the same day, with a waiting list. Insurance covers evaluations coded as medically necessary under a family of Current Procedural Terminology codes that the American Psychological Association says were revised on January 1, 2019, and often excludes testing sought for educational or occupational reasons.

What an evaluation is not is a faster or better way to learn your IQ. The intelligence test inside it is one instrument among many, and a person whose question is where their abilities stand relative to other adults, with an error band, can answer it with a normed cognitive battery for 15 to 50 dollars and an hour or three of their time. The page on official IQ tests sets the three routes side by side; this page is about the clinical one and about knowing when you need it.

1 What a Neuropsychological Evaluation Actually Contains

An evaluation is a clinical process with testing inside it, and the guidelines that define the profession list seven components of which the tests are one. The AACN practice guidelines set out the sequence: a referral question that states what decision the evaluation is meant to inform; a clinical interview covering history, symptoms, medical and psychiatric background, education and occupation; a review of available records, from prior testing to medical imaging; the selection and administration of standardized tests appropriate to the question; integration of test data with the history and with behavioural observations made during the session; a written report that answers the referral question and makes recommendations; and feedback, in which the results are explained to the person tested. The guidelines are explicit that interpretation is the neuropsychologist's responsibility and that test scores alone do not constitute an evaluation.

The domains covered by the testing are broad by design. A typical adult battery samples general intellectual ability, attention and concentration, processing speed, learning and memory in verbal and visual modalities, language, visuospatial and constructional skills, executive functions such as planning, inhibition and set shifting, motor and sensory function where relevant, and mood and personality. The page on cognitive domains describes how a cognitive battery organizes the first of those groups, and the difference between the two lists is the point: a neuropsychological evaluation covers cognition and then keeps going into memory systems, executive control, emotional functioning and the validity of the person's effort.

Validity assessment is a defining feature. The AACN's 2009 consensus statement, in The Clinical Neuropsychologist, volume 23, issue 7, pages 1093 to 1129, established that neuropsychological assessment should include measures of performance validity and symptom validity, which detect scores that do not reflect a person's actual ability, and the 2021 update, volume 35, issue 6, pages 1053 to 1106, reaffirmed the practice as standard. An adult evaluation therefore includes tasks whose purpose is to check that the other tasks were taken with full effort, and a report will say whether the results are interpretable. No consumer cognitive test does this in the clinical sense, though a normed online battery applies its own integrity screening for a related reason, as the ACIS technical manual describes.

The output is a document. The report states the referral question, the tests used, each score with its normative comparison, the pattern across domains, the clinician's interpretation, a diagnosis or a differential diagnosis where warranted, and recommendations for treatment, accommodations or further investigation. It is signed by a licensed professional, and that signature is what schools, employers, courts and disability systems accept when they accept the result.

2 Who Performs It, and How It Is Billed

A neuropsychological evaluation is performed by a licensed psychologist with postdoctoral training in neuropsychology, and its billing follows a code structure that separates the professional's time from the administration of tests. The page on who can administer an IQ test explains the licensing levels: the instruments inside an evaluation are restricted to buyers with doctoral training, which Pearson designates as qualification level C on the WAIS-5 product page, read on September 19, 2026. Test administration may be delegated to a trained technician or, in a training clinic, to a supervised doctoral student, but the interpretation and the report are the licensed clinician's.

In the United States the service is billed under Current Procedural Terminology codes. The American Psychological Association's testing codes page, read on September 19, 2026, states that psychological and neuropsychological testing services use diagnostic tests when mental illness or brain dysfunction is suspected and clarification is essential for diagnosis and treatment, and that the family of codes was revised with extensive changes effective January 1, 2019. The revised structure bills the evaluation services, meaning the clinician's integration, interpretation and report, in units of time separately from the administration and scoring of tests, which are billed in their own units whether performed by the professional or by a technician. The private practice fee page cited above lists the codes it uses on a superbill, 90791 for the diagnostic interview and 96130, 96131, 96136 and 96137 for evaluation and administration, which is the psychological rather than the neuropsychological branch of the same family.

Insurance coverage turns on medical necessity. An evaluation ordered to clarify a suspected neurological or psychiatric condition is the kind the codes were written for; testing sought for school accommodations, career decisions or curiosity is commonly excluded by plan terms, and a provider out of network bills the client directly and issues a superbill for whatever reimbursement the plan allows. The fee page cited above describes exactly that model and recommends asking the insurer three questions before booking: whether the plan covers out of network psychological testing for the diagnosis in question, whether an out of network deductible applies, and at what rate reimbursement is paid. Under the No Surprises Act, clients are entitled to a Good Faith Estimate of the expected cost of non emergency services, which the Centers for Medicare and Medicaid Services explain, and a provider who cannot give one before the first appointment is a provider to question.

3 What It Costs Where Prices Are Published

Priced from providers' own pages on the same day, an adult evaluation spans more than an order of magnitude, and the difference is almost entirely who is doing the work and how many hours it takes. The table below is limited to fees read on the provider's page on September 19, 2026 and to ACIS's published prices. It is not a survey of the market, which the page on how much an IQ test costs attempts; it is a set of fixed points against which any quote can be judged.

Two features of the table deserve comment. The first is that the university clinics deliver the same category of document as the private practice, a signed clinical report, at a fraction of the price, with the trade off of a waiting list and a trainee administering the tests under supervision. For a person whose question is clinical and whose timeline allows a wait, the training clinic is the rational choice, and the page on where to take an IQ test lists how to find them. The second is that the ACIS rows are not a cheaper version of the rows above them. They deliver a normed cognitive profile with no clinician, no interview, no validity testing in the clinical sense and no diagnosis, which is the right product for a different question.

4 What the Testing Covers, Instrument by Instrument

The tests inside an adult evaluation are chosen for the referral question, and the intelligence scale is the frame around which the rest are read. The Wechsler Adult Intelligence Scale, Fifth Edition, is the most common core. Pearson's product page describes it as an individually administered clinical instrument for ages 16 years 0 months to 90 years 11 months, published in 2024, with a completion time of 45 minutes for the seven subtest Full Scale IQ and 60 minutes for the ten primary index subtests, and notes that it was co-normed with the Wechsler Memory Scale, Fifth Edition, to increase the precision of comparisons between IQ and memory. That co-norming is the reason a neuropsychologist can say that a person's memory is lower than expected for their intelligence, rather than merely lower than average. The page on what the WAIS-5 is walks the index structure.

Around the core, the clinician adds instruments by domain. Attention and processing speed are sampled with continuous performance and speeded tasks beyond the WAIS-5's own; the page on processing speed explains what those tasks measure. Learning and memory are sampled with list learning, story recall and visual reproduction tasks with delayed recall, which is the part of memory a cognitive battery does not test. Executive functions are sampled with tasks of planning, inhibition and flexibility. Language and visuospatial construction have their own instruments. Mood and personality are sampled with questionnaires, because depression and anxiety produce cognitive complaints and lower scores, and the evaluation has to separate them from a primary cognitive cause. The page on IQ and mental health reviews how mood and measured ability interact.

Performance validity measures run through the whole battery, and their result governs whether anything else can be interpreted. The 2021 AACN consensus statement treats validity assessment as a routine and necessary part of the evaluation rather than an accusation, and a report that finds invalid performance will say that the scores cannot be interpreted rather than reporting them as if they were low. Pearson's WAIS-5 page lists a performance validity report among the products for the scale, which reflects how standard the practice has become.

The result is a profile across a dozen or more domains, each with a normative comparison, read against the person's history and the validity indicators. The intelligence scale within it contributes the Full Scale IQ and the index scores, and the page on full scale IQ explains what that composite is; the evaluation contributes everything around it.

5 Neuropsychological Testing for Adult ADHD: What the Evidence Supports

Adults with ADHD score lower on average on tests of attention, working memory and executive function, and the research on using those tests to diagnose individuals finds that they add little to a careful clinical history. Nikolas, Marshall and Hoelzle examined the role of neurocognitive tests in the assessment of adult ADHD in Psychological Assessment in 2019, volume 31, issue 5, pages 685 to 698, and reported that while group differences are reliable, the tests classify individuals poorly, with many adults with ADHD scoring in the normal range and many adults without it scoring low. Lange and colleagues reached a similar conclusion in ADHD Attention Deficit and Hyperactivity Disorders in 2014, volume 6, issue 4, pages 241 to 248, concluding that cognitive neuropsychological assessment is useful for describing an individual's functioning and planning support, and of limited value as a diagnostic instrument on its own.

The reason is that ADHD is defined by a pattern of symptoms across settings and across time, established from history, self report and, where possible, collateral report, and a test session samples one hour of performance under conditions designed to hold attention. A person can meet every criterion and perform well for that hour. The page on ADHD and IQ reviews the wider literature on ability and attention, and the page on working memory tests covers the specific cognitive domain most associated with the diagnosis and the limits of any span score as evidence.

What follows for an adult seeking an ADHD evaluation is a distinction between two services. A diagnostic evaluation for ADHD is primarily a clinical interview with rating scales and history, and many clinics, including the Iowa training clinic priced above, offer it as such. A full neuropsychological evaluation is warranted when the question is broader: whether something other than ADHD explains the difficulties, whether a learning disorder or a mood disorder coexists, or whether a documented profile is needed for accommodations. Paying for the second when the first was the question is the most common way adults overspend in this area, and a provider who cannot say which of the two they are proposing is a provider to question.

6 Memory Complaints, Screening Tests, and the Full Evaluation

A short screening test can flag a memory problem in ten minutes, and only a full evaluation can say what the problem is, which is why the two exist at different points in the same pathway. The Montreal Cognitive Assessment, published by Nasreddine and colleagues in the Journal of the American Geriatrics Society in 2005, volume 53, issue 4, pages 695 to 699, is a one page, roughly ten minute screen designed to detect mild cognitive impairment, and it is the instrument most people have heard of because of its use in public life. A screen is built to be sensitive: it is meant to catch cases for further assessment, at the cost of flagging some people who are fine. The page on what a cognitive test is separates screens from evaluations and from cognitive batteries.

A positive screen, or a persistent complaint with a negative one, leads to the evaluation described on this page, with a memory battery at its centre and the intelligence scale as the frame. The clinically important comparison is between memory performance and expected performance given the person's ability and age, which is why the co-norming of the WAIS-5 and the WMS-5 matters, and why age norms matter more here than anywhere else in testing. The page on whether IQ changes with age sets out the normal trajectory against which a decline is judged.

For an adult under 60 with memory complaints and no medical trigger, the most common findings of an evaluation are mood, sleep and attention rather than a memory disorder, and a report will say so. That is a useful outcome and it costs what an evaluation costs. A normed cognitive battery cannot substitute for it, because it does not test delayed recall or interview the person, and a screen cannot substitute for it, because it does not measure enough to explain anything. The three tools sit in sequence, and the sequence is cheap screen, then normed measurement, then evaluation when the first two leave a question open.

7 The IQ Test Inside the Evaluation

The intelligence scale contributes a Full Scale IQ and a set of index scores, and in a clinical report those numbers are context for the rest of the profile rather than the finding. A neuropsychologist reads the Full Scale IQ as the level at which the other domains should be expected to perform, and reads a domain that falls well below it as the signal. A memory index 20 points below the Full Scale IQ means something different from a memory index 20 points below 100, and the report is written around the first comparison. The page on how IQ is calculated explains how the composite is built, and the page on the General Ability Index explains why clinicians sometimes prefer a reasoning composite with working memory and speed removed as the reference level.

Every score in the report is a standard score with an error band, and the report will usually state the confidence interval and percentile for each. The page on reliability and validity explains where the band comes from. A reader of a clinical report should hold two facts at once: the intelligence scale is the most reliable instrument in the battery, with composite reliabilities above .95 on the Wechsler scales, and the individual tests around it are less reliable, with wider bands, which is why a single low score on a single test is not by itself a finding.

Binder, Iverson and Brooks put numbers on that in Archives of Clinical Neuropsychology in 2009, volume 24, issue 1, pages 31 to 46, under the title To err is human. Reviewing normative data, they showed that abnormal scores on some tests in a multi test battery are common in healthy adults, because the more tests are given, the more likely it is that at least one falls below a cut off by chance, and that variability across a profile is the norm rather than the exception. A competent report accounts for this by interpreting patterns rather than isolated scores and by stating base rates. A reader who sees one low score among twenty and concludes that something is wrong has misread the report, and a clinician who does the same has misread the evidence.

8 When an IQ Test Is Enough

A normed cognitive battery answers the question of where you stand across measured abilities, with an error band, and if that is the question, an evaluation is the wrong purchase. Four situations fit the cognitive battery. The first is self knowledge: an adult who wants to know their profile across verbal, reasoning, quantitative, spatial, working memory and speed domains, at stated precision, needs a measurement and not a diagnosis. The second is a baseline: a person who wants a documented starting point against which to compare a future measurement, after a change in health, work or age, needs a repeatable normed instrument. The third is a gifted or high range question, which the page on gifted tests for adults covers, where the intelligence measurement is the whole question. The fourth is research or professional screening, where many people need the same normed measurement under the same conditions and a clinician is not part of the design.

Four situations do not fit it. A suspected diagnosis needs a clinician, because diagnosis is made on history and functioning and no cognitive score is a diagnosis. A documented need needs a signed report, because institutions accept signed reports and nothing else, as the page on official IQ tests sets out. A change from earlier ability needs the memory and executive instruments that a cognitive battery does not contain. And a legal or forensic question needs an evaluation performed to that standard, with validity assessment, by a clinician who will testify to it.

The two routes are complementary, and the sequence matters. A normed profile taken first, at 15 to 50 dollars, gives a person and their clinician a set of numbers with standard errors before an evaluation is booked. If the profile is flat and average, the question shifts from cognition to mood, sleep or circumstances. If the profile shows a domain a standard deviation below the others, the referral question is sharper and the evaluation shorter. The page on IQ tests for adults sets out what such a profile contains, and the page on accurate IQ tests sets out the criteria that make one worth taking.

9 Reading the Scores: Four Scales in One Report

A neuropsychological report uses several score scales at once, and misreading which scale a number is on is the most common error a client makes with their own results. The intelligence scale reports composites with a mean of 100 and a standard deviation of 15, and subtests with a mean of 10 and a standard deviation of 3. Many neuropsychological instruments report T scores, with a mean of 50 and a standard deviation of 10, and some report z scores, with a mean of 0 and a standard deviation of 1. All four describe the same distance from the average of the norm sample, and the table below aligns them; the percentiles are the standard normal values and the conversion is arithmetic rather than a figure from any manual. The page on the IQ score chart does the same alignment for the common IQ scales, and the IQ percentile calculator converts any point.

Two conventions in clinical reports differ from what a consumer report shows. The first is that clinicians often describe scores with labels tied to standard deviation bands, such as average, low average or exceptionally low, and the labels differ between instruments and between publishers; the number and its percentile are the portable facts, and the label is a gloss. The second is that a neuropsychological report compares scores with each other more than with 100, because the question is usually whether one domain has fallen relative to the person's own level. A memory T score of 40 in a person whose intelligence composites sit at 115 is a 25 point gap in IQ units, and that gap is the finding, not the 40 itself.

The base rate point from Binder, Iverson and Brooks applies directly here. A profile of 25 scores in a healthy adult will typically contain several at or below one standard deviation below the mean, because that band contains 16 percent of the population on every test and the tests are not perfectly correlated. A report that flags a single T score of 38 as impairment has ignored that arithmetic, and a client reading one should ask how many scores were obtained, how many fell below the cut off, and how that count compares with what healthy adults show. The page on IQ score versus percentile explains why the percentile is the number to carry between scales, and the page on the 15 point standard deviation explains the unit itself.

A low cognitive score is one part of an evaluation; the low IQ guide explains why developmental history and everyday functioning also matter.

10 How to Prepare, and What to Expect on the Day

An evaluation measures you as you arrive, so the preparation that matters is the preparation that lets the session measure your usual functioning rather than a bad day. Sleep the night before, eat, bring glasses and hearing aids, and take regular medications as prescribed unless the clinician has asked otherwise; a person who stops stimulant medication without instruction produces a session that measures withdrawal. Bring prior reports, school records and a list of medications, because the record review is part of the evaluation and the report is better for it. Expect the testing to be split across sessions if it runs long, and expect breaks.

Give full effort on every task, including the ones that seem too easy, because some of them are the validity measures described above, and a pattern of poor effort on easy tasks makes the whole profile uninterpretable. Do not practice cognitive tests beforehand: the page on how to prepare for an IQ test explains that practice raises scores through familiarity and makes the norm comparison invalid, and a clinician who suspects practice will say so in the report.

Expect the feedback session, and use it. Under the AACN guidelines the evaluation is not complete until the results have been explained, and the feedback session is where a person learns what the numbers mean for them, what the recommendations are, and what the report will say to whoever reads it next. Ask for the standard scores and confidence intervals if they are not in the report, and ask which findings the clinician considers robust and which are single scores. A report that lists twenty scores without saying which matter has left the interpretation to the reader, and the interpretation is what the fee paid for.

11 For Clinicians and Researchers: Where a Normed Online Battery Fits

A clinician or researcher who needs a normed cognitive profile from many people, before or instead of a full evaluation, needs an instrument that reports scores with standard errors and controls its administration, and that is a different product from the clinical kits. The clinical instruments require qualification level C, a kit, record forms and scoring subscriptions, and a trained administrator per session; Pearson's WAIS-5 page lists complete kits from 215 dollars with materials and training priced separately. For a screening or baseline layer, a normed online battery with a practitioner interface administers the same kind of measurement without the per session labour. The page on cognitive assessment platforms compares the products on that market, and the page on the cost of cognitive testing platforms prices them.

ACIS's professional suite is one such layer, and we describe it here as the vendor. A professional account issues participant links, records no participant name or email, lets the administrator decide whether the participant sees their own results, and exports verified scores for a cohort, per the professional page read on September 19, 2026. Every account starts with three Quick administrations at no cost; after that, credits are charged when links are created, at 15 for a Quick administration, 30 for Optimized and 50 for Full Scale, where one credit equals one US dollar, and pay as you go credits are purchased from 15 credits and do not expire. The measurement is the same battery consumers take, scored against the same adult reference frame of 3,243 records, with the same standard errors printed.

What the suite does not provide is anything clinical. It does not interview, does not assess performance validity in the sense the AACN guidelines require, does not diagnose, and does not produce a signed report. It provides a normed profile with error bands to a professional who then does whatever the professional does with it. For a clinic that wants a cognitive baseline on intake, a researcher who needs a covariate, or an employer's occupational health service that wants a screening layer before referral, that is the product; for a diagnosis, it is not.

12 Where ACIS Sits, and What a Buyer Should Do

We sell a normed cognitive battery and a professional interface for administering it, so treat this section as a disclosure and check it against the rest of the page. ACIS is not a neuropsychological evaluation and is not accepted as one by any institution. It measures 20 subtests across six domains against an adult reference frame of 3,243 records in age bands from 16 to 90, reports a Full Scale IQ with a composite reliability of .9886 and a standard error of 1.60 points, and prints a reliability and standard error for every index and subtest in its technical manual, version 1.4, updated August 3, 2026. It applies retake limits, completion requirements and integrity screening in place of a proctor, and the manual states that repeated practice attempts are not treated as equivalent to first valid completions.

The prices are one time: 15 dollars for Quick, 30 for Optimized, 50 for Full Scale, and a per subtest price for the Custom form on the order page; five subtests are free without a card; purchased access stays open for 30 days; the quality guarantee is a full refund within five days if the report does not deliver the features described at checkout or a technical issue prevents access. Professional accounts use credits at the same rates with three Quick administrations included.

The limits are the ones this page has drawn around every cognitive battery. No interview, no history, no delayed memory testing, no clinical validity assessment, no diagnosis, no signed report. The norm frame is English speaking adults. One subtest, Spatial Navigation, was retired on September 7, 2026 and replaced by Layer Rotation in the Visual Spatial Index, and the manual's notice says the affected tables will be reissued with the next edition, which a professional reading that index should know.

What a buyer should do depends on the question. If you suspect a diagnosis, need documentation, are asking about a change from earlier ability or are in a legal process, book an evaluation, and consider a university training clinic if the timeline allows. If you want to know where you stand across abilities with an error band, or want a baseline to bring to a clinician, take the free subtests and buy the form that reports the indices you need. If you are a clinician or researcher who needs the second thing at scale, the professional suite exists for that, and the technical manual is where to check whether its evidence meets your standard before you rely on it.

13 Sources Behind This Page

Every figure above is traceable to one of the following, and each is linked at the point where it is used. Fees were read on the providers' own pages on September 19, 2026 and will change; the private practice is identified by its published fee page rather than by name in the tables above because the figure, not the practice, is the point.

• Board of Directors, American Academy of Clinical Neuropsychology. AACN practice guidelines for neuropsychological assessment and consultation. The Clinical Neuropsychologist, 2007, volume 21, issue 2, pages 209 to 231.
• Heilbronner R L and colleagues. American Academy of Clinical Neuropsychology consensus conference statement on the neuropsychological assessment of effort, response bias, and malingering. The Clinical Neuropsychologist, 2009, volume 23, issue 7, pages 1093 to 1129.
• Sweet J J and colleagues. American Academy of Clinical Neuropsychology (AACN) 2021 consensus statement on validity assessment. The Clinical Neuropsychologist, 2021, volume 35, issue 6, pages 1053 to 1106.
• Nikolas M A, Marshall P and Hoelzle J B. The role of neurocognitive tests in the assessment of adult attention-deficit/hyperactivity disorder. Psychological Assessment, 2019, volume 31, issue 5, pages 685 to 698.
• Lange K W and colleagues. Utility of cognitive neuropsychological assessment in attention-deficit/hyperactivity disorder. ADHD Attention Deficit and Hyperactivity Disorders, 2014, volume 6, issue 4, pages 241 to 248.
• Nasreddine Z S and colleagues. The Montreal Cognitive Assessment, MoCA: A brief screening tool for mild cognitive impairment. Journal of the American Geriatrics Society, 2005, volume 53, issue 4, pages 695 to 699.
• Binder L M, Iverson G L and Brooks B L. To err is human: "Abnormal" neuropsychological scores and variability are common in healthy adults. Archives of Clinical Neuropsychology, 2009, volume 24, issue 1, pages 31 to 46.
• American Psychological Association Services. Psychological and neuropsychological testing codes for psychologists. apaservices.org, read September 19, 2026.
• Centers for Medicare and Medicaid Services. No Surprises Act and the Good Faith Estimate. cms.gov/nosurprises, read September 19, 2026.
• DiRago Assessment, Los Altos, California. Fees and payment. diragoassessment.com, read September 19, 2026.
• University of Iowa, Seashore Psychology Clinic. Assessment services and estimated costs. psychology.uiowa.edu, read September 19, 2026.
• University of South Florida Psychological Services Center. Clinic policies and fees. usf.edu, read September 19, 2026.
• Pearson. Wechsler Adult Intelligence Scale, Fifth Edition (WAIS-5), product page. pearsonassessments.com, read September 19, 2026.
• ACIS. Technical manual, version 1.4, updated August 3, 2026, and the ACIS Professional page. acisiq.com/technical-manual and acisiq.com/professional, read September 19, 2026.

14 Frequently Asked Questions