IQ 74

An IQ of 74 is 26 points below the average of 100, or 1.73 standard deviations. This site classes it as Below Average. About 4.2% of people score at or below 74, which in a class of 30 is roughly 1 person. It sits 4 points past the 70 mark and 11 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.

IQ tests measure a narrow slice of thinking: spotting patterns, holding rules in mind and working fast under time pressure. They do not measure practical skill, kindness, reliability, craft or creativity, which are the things most people notice about you day to day.

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.

Online scores are estimates with wide error bars. For 74, a 5-point window either way runs from about 69, where 1 in 52 score that low or lower, to 79, where it is 1 in 12.

Professional assessments combine several subtests (verbal, visual, memory and speed) and look at the pattern between them, not just one total. A single online total cannot show that pattern.

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.

Near 74 the curve is steep, so a few points change your percentile a lot. Going from 74 to 77 would lift you from the 4.2nd to the 6.3rd percentile. These are the usual reasons scores swing:

• Stress and mood. Worry takes up working memory. People who feel anxious about tests often score below their usual level.
• Language. Questions that rely on words or written rules favour native speakers. Visual puzzles reduce this effect but do not remove it.
• 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 4.2% of people score 74 or lower. Applied to whole populations:

The curve fills up quickly towards the middle. Moving from 74 to 79 adds about 4 percentage points of people at or below you, and moving down to 69 removes about 2.

What your 74 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 74 really means somewhere from 69 to 79. Online tests are less precise than that.

Which scale was it on? A 74 reported on an SD 16 scale converts to about 76 on the usual SD 15 scale, and one from an SD 24 scale (seen in some Cattell-style results) to about 84. 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 74. 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 74.

Nearby scores and the round-number landmarks, so you can see how quickly the percentile changes around 74. Every row links to that score's page.

People with an IQ of 74 typically score about 710 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.