IQ 82: meaning and a piece of history
An IQ of 82 is higher than about 11.5% of people, roughly 1 in 9 at or below, in the low average range. It falls in the band that US military rules call Category IV, between the 10th and 31st percentiles on the military aptitude test, and that band has an unusual history.
How far below average is 82?
An IQ of 82 is 18 points below the average of 100, or 1.2 standard deviations. About 11.5% of people of the same age score lower, the shaded sliver at the far left of the curve below.
On a test with a standard deviation of 16, such as older Stanford-Binet editions, the same result would be about 81, and on the Cattell scale, which uses 24, about 71. Why scales differ.
What an IQ of 82 tells you
Under current US law, recruits scoring at or above the 10th percentile but below the 31st on the AFQT may make up no more than 4% of each service's new active-duty enlistments in a year, unless the Secretary of Defense raises the limit to as much as 20%. On the IQ scale, that percentile band corresponds to roughly 81 to 92.
During the Vietnam War, Defense Secretary Robert McNamara's Project 100,000, which began in 1966, admitted large numbers of men from this band. Historians have since documented that many were sent to combat roles and fared poorly during and after their service, a lesson often cited when recruiting standards are debated. It is a reminder that the hard part is not the score but the training and support people are given.
How an IQ of 82 is classified
Different tests and manuals use different words for the same score, and the words have changed over time. Here is where 82 falls on each of the systems you are most likely to meet.
Sources: American Psychiatric Association, DSM-5 fact sheet on intellectual disability; World Health Organization, ICD-11, 6A00 disorders of intellectual development; Peltopuro, M. and others (2014), "Borderline intellectual functioning: a systematic literature review", Intellectual and Developmental Disabilities, 52(6), 419–443. WISC-V descriptors from Pearson's interpretive reports, as on our good IQ score guide.
Borderline intellectual functioning and an IQ of 82
Scores from roughly 70 to 85 are often described as borderline intellectual functioning. It is not a diagnosis of intellectual disability: most people in this range live independently, work and raise families. But a 2014 systematic review of 49 studies found that the group faces more neurocognitive, social and mental health difficulties than average, and called it "almost invisible" in research and services.
On a perfect bell curve, about 13.6% of people score between 70 and 85, so this is far from rare. People in the range often learn best with clear, concrete instructions, worked examples and extra time for new or written tasks, and often do well in practical, hands-on work.
Source: Peltopuro, M. and others (2014), "Borderline intellectual functioning: a systematic literature review", Intellectual and Developmental Disabilities, 52(6), 419–443.
Can you join the US military with an IQ of 82?
The US armed forces don't use IQ tests: they use the Armed Forces Qualification Test (AFQT), scored as a percentile of young adults. On the IQ scale, 82 is at about the 12th percentile, which would correspond to AFQT Category IV. The comparison is only rough, because the AFQT tests word knowledge, reading and maths, which depend heavily on schooling.
Sources: 10 U.S.C. § 520 (2024 edition); US Department of Defense, Population Representation in the Military Services; history of the 1966 Project 100,000: Greenhill, K. M., "Don't dumb down the army", Belfer Center, Harvard Kennedy School.
Is your 82 accurate?
Low scores are the most fragile results on any test, because almost everything that goes wrong on the day pulls a score down. Common reasons include:
- Running out of time. On timed tests, including ours, an unanswered question counts as wrong.
- Nerves. A review of 238 studies found test anxiety consistently linked with lower scores.
- Tiredness. Sleep loss hits attention and speed hardest, which costs points against the clock.
- Language and format. Taking a test in a second language, on a small screen or in an unfamiliar format can lower a result without saying anything about reasoning.
What an 82 means on our test
The Assessivo test moves in steps of about 2.5 points, so it can't give exactly 82: the nearest results are 80 (10 correct) and 83 (11 correct). Every question has four options, so someone guessing every answer at random averages nine correct, a score of 78. So an online result at this level is only a little above chance and is best treated as a rough reading. A calm retake, after a look at some sample questions, will tell you more.
If any of this sounds like your session, retake the free IQ test when you are rested and have 25 quiet minutes. A score that moves a lot between attempts was never very solid.
Sources: von der Embse, N. and others (2018), "Test anxiety effects, predictors, and correlates: a 30-year meta-analytic review", Journal of Affective Disorders, 227, 483–493; Lim, J. and Dinges, D. F. (2010), "A meta-analysis of the impact of short-term sleep deprivation on cognitive variables", Psychological Bulletin, 136(3), 375–389. Guessing figures are worked out from the binomial distribution for 36 four-option questions.
What is the mental age for an IQ of 82?
The first IQ tests, for children, described performance as a "mental age": the age whose typical performance a child matched. IQ was mental age divided by real age, times 100. Run that old formula backwards and you get the figures below, for children only.
| Child's age | Performs like a typical child of about |
|---|---|
| 6 | 4 years 11 months |
| 8 | 6 years 7 months |
| 10 | 8 years 2 months |
| 12 | 9 years 10 months |
| 14 | 11 years 6 months |
For adults the idea doesn't work, which is why David Wechsler replaced it in 1939 with today's method: compare each person with others of the same age. An adult who scores 82 has an adult's knowledge, interests and experience. The score only says how their test performance compares with other adults'.
How common is an IQ of 82?
Line up 100 people of the same age and about 12 would score 82 or lower; the orange dot marks the place. In a city of a million, about 115,000 people would be at or below this level.
The bar shows the likely range on a professional test, about five points either way: 77 to 87, from the 6th to the 19th percentile.
How 82 compares with nearby scores
| IQ | Percentile | Classic label | Score this low or lower |
|---|---|---|---|
| 72 | 3rd | Borderline | 1 in 32 |
| 77 | 6th | Borderline | 1 in 16 |
| 82 | 12th | Low average | 1 in 9 |
| 87 | 19th | Low average | 1 in 5 |
| 92 | 30th | Average | 1 in 3 |
Questions about an IQ of 82
What percentile is an IQ of 82?
An IQ of 82 is at about the 12th percentile: it is higher than about 11.5% of people of the same age, and roughly 1 person in 9 scores this low or lower.
Is 82 a low IQ?
Yes. 82 is 18 points, or 1.2 standard deviations, below the average of 100. On the classic Wechsler labels it is low average. A single score is an estimate with a margin of error of about five points, so 82 is best read as roughly 77 to 87.
Does an IQ of 82 mean intellectual disability?
No. 82 is above the range usually associated with intellectual disability, which is about 70 or below. It falls in the range sometimes called borderline intellectual functioning, which is not a disability in itself.
What is the mental age for an IQ of 82?
Mental age is an idea from the earliest tests for children. By the old formula, a 10-year-old scoring 82 would perform like a typical child of about 8 years 2 months. For adults it has no meaning: modern IQ tests compare adults with other adults, and an adult who scores 82 is not like a child.
What is AFQT Category IV?
It is the band of scores from the 10th to the 30th percentile on the US Armed Forces Qualification Test. Federal law limits recruits from this band to 4% of each service's active-duty enlistments a year, unless the Secretary of Defense raises it to as much as 20%. On the IQ scale, the same percentiles are roughly 81 to 92.
Related: the IQ range chart, what counts as an average IQ, what IQ measures and misses and how to tell if an online IQ test is accurate.
Behind a single score of 82 sit several separate abilities. Read about spatial reasoning, verbal reasoning, processing speed, fluid vs crystallized intelligence and abstract reasoning, or try the free pattern recognition test.
Want a second reading?
Take the free Assessivo IQ test when you are rested and have 25 quiet minutes: 36 questions, and your estimated score and percentile as soon as you finish.
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