Is Autism Related to High IQ? | Epic Minds Therapy

Clinically reviewed by Maureen Foss, MS, BCBA, LBA, LABA | Last updated: September 22, 2026

No, autism is not linked to high IQ as a rule. Autistic people have IQ scores across the full range, from intellectual disability to gifted, and an autism diagnosis does not raise or lower a child’s IQ. What autism often changes is the shape of a child’s abilities: real strengths in some areas, real challenges in others, and a mix that a single test score rarely captures well.

That difference matters for families. At Epic Minds Therapy, we work with autistic children whose test results tell very different stories, and the score is almost never the most useful thing to know about them. Autism is also a broad spectrum that looks different from one child to the next, which is why understanding the different types of autism helps put any IQ number in context. Below, we break down what the current data says about average IQ, how autism does and doesn’t affect intelligence, and why “autism equals genius” became such a popular idea.

What Is the Average IQ of Autistic People?

There is no single average IQ that describes autistic people well, because scores are spread widely rather than clustered around one number. The most reliable population data in the U.S. comes from the CDC’s Autism and Developmental Disabilities Monitoring (ADDM) Network, which reviews health and school records for 8-year-olds across multiple states.

In the latest CDC surveillance report (surveillance year 2022, published April 2025), 61.4% of autistic 8-year-olds had cognitive test information in their records. Among those children, 39.6% had an IQ of 70 or below, the range used to identify intellectual disability. According to a participating ADDM site, the rest of the network-wide picture breaks down like this:

IQ range	Classification	Share of autistic 8-year-olds with IQ data (ADDM, 2022)
70 or below	Intellectual disability	About 40%
71 to 85	Borderline	About 24%
Above 85	Average or above average	About 36%

In other words, roughly six in ten autistic children with a documented score fall in the borderline, average, or above-average range, and about four in ten have a co-occurring intellectual disability. Neither group is “typical” autism.

Where the “44%” figure comes from. You may see claims that 44% of autistic people have an average or higher IQ. That number is real, but it is dated. It comes from the CDC’s 2014 surveillance year, when 31% of autistic 8-year-olds had an IQ of 70 or below, 25% were borderline, and 44% scored in the average to above-average range, as summarized in a 2022 Frontiers review. The same review notes that older studies from 1966 to 2001 put the average share of autistic people with intellectual disability near 70%, a picture that shifted as the autism spectrum was defined more broadly.

That broadening shows up in newer research too. A 2026 Autism Research study using ADDM data found that between 2000 and 2016, the prevalence of autism with mild, borderline, or no significant adaptive challenges more than tripled, while autism with moderate to profound challenges declined slightly. More children without intellectual disability are simply being identified today.

Does Autism Affect IQ or Intelligence?

Autism itself does not lower IQ. Intellectual disability is a separate condition that can co-occur with autism, not a feature of autism. What autism can affect is how a child performs on an IQ test and how their abilities are distributed. It helps to separate three ideas that often get blended together.

1. The IQ score. A full-scale IQ is a snapshot of how a child performed on a specific test, on a specific day, under specific conditions. For autistic children, anxiety, a new examiner, bright lights, or sensory overload can pull that snapshot down without reflecting what the child actually understands.

2. The cognitive profile. Many autistic children have what clinicians call a “spiky” profile, with scores that swing high on some subtests and low on others. Researchers have observed that autistic test-takers often show slower processing speed alongside stronger fluid reasoning or visual-spatial skills. When those peaks and valleys are averaged into one number, the full-scale IQ can hide both the strengths and the struggles.

3. Adaptive functioning. This is how a child manages everyday life: communicating needs, dressing, staying safe, handling transitions, and getting along with others. A study of more than 2,200 children found that IQ poorly predicts functioning in autism, especially for children without intellectual disability. A child with an IQ of 120 may still need significant support with daily routines and social situations, which is why the old label “high-functioning autism” can be misleading.

So the honest answer to “does autism affect intelligence?” is: not the underlying capacity, but very often the way that capacity shows up, gets measured, and gets used day to day.

Why Autism and High IQ Get Confused

If most autistic people don’t have unusually high IQs, why is the link so widely believed? A few forces feed the myth.

Media portrayals. Movies and TV tend to show autistic characters as math prodigies, memory wizards, or brilliant but socially awkward scientists. Those stories are memorable, and they shape public expectations far more than population data does.

Savant skills are real, but uncommon. Some autistic people do have exceptional abilities in areas like music, calculation, art, or memory. A review of savant research notes that one large parent survey reported savant skills in 9.8% of autistic children, and a separate study of 254 autistic individuals identified at least one special skill in 13%. That is a meaningful minority, not the norm.

Special interests look like giftedness. An autistic child who knows every train model or every planet’s moons can seem advanced far beyond their age. Deep, focused interests are a strength, but they don’t necessarily mean a high overall IQ.

Twice-exceptional (2e) learners. Some children are both gifted and autistic. These “2e” students are real and deserve support in both directions, and their stories get attention because they are striking.

Research overlaps. Some genetic studies have found overlap between autism and intelligence at the gene level. Findings like these are interesting to scientists, but they do not mean autistic people score higher on average, and population data consistently shows they don’t.

Autism or High IQ? Why a Gifted Child Can Look Autistic (and Vice Versa)

Parents often search for an “autism or high IQ test” because the two can look surprisingly similar in young children. Both gifted and autistic children may read early, talk like little adults, fixate on favorite topics, prefer older kids or grown-ups, react strongly to noise or textures, and get frustrated with same-age peers.

The difference usually lies in why the behavior is happening and whether it holds across settings. A gifted child who isn’t autistic can typically read social cues and adjust once something matters to them. They may be bored by peers, but they understand the unwritten rules. An autistic child’s social communication differences tend to appear everywhere, not just when they are bored, and often come alongside repetitive behaviors, a strong need for sameness, or sensory differences.

It works the other way too. A high IQ can mask autism. Bright children often learn to compensate by memorizing social scripts, copying peers, or reasoning their way through situations that come naturally to others. The 2022 Frontiers review found that on a standard autism observation tool, individuals with above-average IQ were more likely to be missed or misclassified, while those with below-average IQ were more likely to be over-identified. That is one reason many bright autistic people aren’t diagnosed until later childhood or adulthood.

There is no quick online test that can separate autism from giftedness. The reliable route is a comprehensive autism evaluation that combines developmental history, a standardized autism observation, cognitive testing, and a look at adaptive skills. Together, those pieces show whether a child’s differences come from autism, high ability, both, or something else.

IQ Testing and Nonverbal or Minimally Verbal Children

Standard IQ tests lean heavily on language. Children are asked to follow spoken instructions, explain answers, and respond quickly. For a child who is nonverbal or minimally verbal, those demands can make the score reflect communication barriers rather than thinking ability.

Research shows how much the choice of test matters. In a well-known study, 38 autistic children scored on average 30 percentile points higher, and in some cases more than 70 points higher, on Raven’s Progressive Matrices, a nonverbal reasoning test, than on the widely used Wechsler scales. Typically developing children showed no such gap. The children didn’t change; the test did.

That is why a low score on a language-heavy test should never be treated as the final word on a nonverbal child’s potential. Clinicians may use nonverbal measures, adapt how instructions are given, or rely more on observation and adaptive assessments. For a deeper look at how professionals approach this, see what research says about IQ in nonverbal children.

Whatever a child’s score, the goal is the same: building the skills that make everyday life more independent and more enjoyable. Families often ask whether ABA can improve IQ, but the more meaningful measure is usually progress in communication, self-care, and learning readiness. Our in-home ABA therapy builds those skills where your child lives, school-based ABA support helps them carry skills into the classroom, and parent training sessions give you tools to keep that progress going between visits.

Families in North Carolina, Maryland, Alaska, New Mexico, Utah, and Colorado work with Epic Minds Therapy to support children at every point on the spectrum. Ready to understand your child’s unique strengths? Contact our team to talk about evaluation and next steps.

Frequently Asked Questions

Do autistic people have a high IQ?

Not as a rule. Autistic people have IQ scores across the full range. In the CDC’s 2022 data, about 36% of autistic 8-year-olds with IQ information scored above 85, about 24% scored in the borderline range, and about 40% had an IQ of 70 or below.

What is the average IQ of someone with autism?

There is no single meaningful average, because scores are spread widely. U.S. surveillance data shows roughly 40% of autistic children with IQ data have an intellectual disability, while about 60% score in the borderline, average, or above-average range.

Does autism affect IQ?

Autism doesn’t raise or lower a person’s underlying intelligence. It can, however, affect test performance through language demands, anxiety, sensory stress, and uneven “spiky” cognitive profiles, so a single score may underestimate or oversimplify a child’s abilities.

Are autistic people more intelligent on average?

No. Population data does not show higher average intelligence among autistic people. The belief comes largely from media portrayals, memorable savant skills, and deep special interests, which are real but don’t reflect the whole spectrum.

Can you have a high IQ and autism?

Yes. Many autistic people have average or above-average IQs, and some are gifted. A high IQ can actually make autism harder to spot, because bright children often learn to mask or compensate for social differences.

Is there a test to tell autism from high IQ?

There’s no single test. Telling autism apart from giftedness takes a comprehensive evaluation that combines developmental history, a standardized autism observation, cognitive testing, and adaptive skills assessment, ideally by a clinician experienced with both.