IQ 85

About 68% of people score between 85 and 115, and 85 sits inside that range, 15 points below the exact midpoint of 100. Around 16% of people score at or below 85 and 84% score higher. It sits exactly 1 standard deviation below the mean, one of the landmark points on the curve.

Most of the difference between people with average scores comes from other things: knowledge, experience, habits and how often they practise the kind of thinking a task needs.

This is the shared result of most of the people you know, from colleagues to friends to family. Nothing about it is a barrier to the things people usually care about.

In daily life a 85 does not show up as a limit or an edge. It means that on fast, unfamiliar puzzles you tend to be a little slower or less accurate than the median adult, by 15 points or 1.00 of a standard deviation.

You can follow complex instructions, learn new software, manage money and pick up a trade or profession. The ceiling on those is set far more by practice and interest than by a few IQ points.

Where a score like this shows is mainly in speed on unfamiliar, timed problems. Given time, familiar material and a clear goal, people across the average range reach the same answers.

Two people who both score 85 can have very different strengths underneath. These habits help whichever pattern you have:

• Learn in the format that suits you. Some people learn fastest by doing, others by reading or by talking it through.
• Go deep in one area. Expertise lets people reason quickly in their own field whatever their overall score.
• Play to your pattern. If visual puzzles felt easier than number ones, that is useful information about how you learn.

Scoring 85 or lower is a 16% share of everyone. Scaled up to whole populations, that works out as:

About 16% of people score 85 or lower, compared with 9.1% at 80 or lower and 25% at 90 or lower. Five points here changes the share by about 9 percentage points.

What your 85 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 85 really means somewhere from 80 to 90. Online tests are less precise than that.

Which scale was it on? Score reports do not always say. On the common SD 15 scale your 85 stands as it is. If the report used SD 16 it equals about 86, and if it used SD 24 about 91. The percentile follows the converted number.

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

Our historical estimates start at 115, so nobody sits close to 85. That is not because famous people score higher. Estimates are only attempted for people with extraordinary records, which leaves ordinary scores unrepresented.

85 is the lower edge of the range where about two in three people score. It is a common result: about 1 in 6 people score 85 or lower.

The difference between 85 and 90 is smaller than the margin of error on most tests, so a single 85 and a single 90 can easily come from the same person.

The scores one and five points either side of 85, plus the round numbers from 100 to 150, side by side. Tap any score for its full page.

People with an IQ of 85 typically score about 810 on the SAT and about 13 on the ACT composite. Scores vary a lot from person to person, so the range shows where about four in five land.