IQ 72

An IQ of 72 is 28 points below the average of 100, or 1.87 standard deviations. This site classes it as Below Average. About 3.1% of people score at or below 72, which in a class of 30 is roughly 1 person. It sits 2 points past the 70 mark and 13 short of 85.

A score in the 70s on one online test is not a diagnosis of anything. Only a qualified professional, such as a clinical or educational psychologist, can assess anything clinical, and they never rely on a single number.

A result in the 70s often reflects the test as much as the person. Timed abstract puzzles are unfamiliar to many adults, especially anyone who left education a while ago or who learned in a different language.

Retest gains of a few points are well documented once a format is familiar. First attempts at any unfamiliar kind of test tend to be the least representative.

A 72 from one online test is best read as a range, not a point. Even a well-built, supervised test has a margin of error of roughly 5 points either side, so the same person could reasonably score anywhere from about 67 to 77. That spans the 1.4th to the 6.3rd percentile.

Your screen, your connection, background noise and interruptions all affect a timed test. A phone in a busy room is a very different test from a quiet desk.

Reading level matters as well. If the instructions or questions lean on vocabulary, anyone reading in a second language is at a disadvantage that has nothing to do with reasoning.

The same person can score 67 one week and 77 the next. Most of that swing comes from the conditions on the day rather than any change in ability:

• Sleep. A short night reliably hurts working memory and attention, the two things timed puzzles lean on hardest.
• Stress and mood. Worry takes up working memory. People who feel anxious about tests often score below their usual level.
• Timing and comfort. Hunger, a headache or testing late at night can all pull a score down on the day.

On a bell curve with a mean of 100 and a standard deviation of 15, about 3.1% of people score 72 or lower. Applied to whole populations:

About 3.1% of people score 72 or lower, compared with 1.4% at 67 or lower and 6.3% at 77 or lower. Five points here changes the share by about 3 percentage points.

What your 72 could really be. Treat any single score as the centre of a range. For a good supervised test, about 5 points either side is typical, so 72 really means somewhere from 67 to 77. Online tests are less precise than that.

Which scale was it on? A 72 reported on an SD 16 scale converts to about 74 on the usual SD 15 scale, and one from an SD 24 scale (seen in some Cattell-style results) to about 83. Check which scale your score report used.

Nobody famous has a verified IQ in most cases, and retrospective estimates are only made for a narrow group.

No historical figure on this site has an estimate close to 72. Retrospective estimates cluster between about 115 and 250 because they are only made for people with exceptional achievements. That is a selection effect, not a sign that famous or successful people cannot score 72.

Nearby scores and the round-number landmarks, so you can see how quickly the percentile changes around 72. Every row links to that score's page.

People with an IQ of 72 typically score about 690 on the SAT and about 11 on the ACT composite. Scores vary a lot from person to person, so the range shows where about four in five land.