Abstract Reasoning.

Abstract reasoning is the ability to work out rules and relationships in unfamiliar, non-verbal material - to look at a set of figures, see how they change, and infer what comes next. This test measures it with the classic matrix format: each item shows a 3x3 grid of figures with one cell missing, and your task is to identify the pattern governing the grid and choose the option (A to F) that completes it. There are no words, facts, or arithmetic involved, so the test isolates reasoning itself.

It runs 11 difficulty-ordered matrices and takes about 10 minutes. Each item offers options A to F, plus "None of these" when no option fits and "I don't know" when you would otherwise guess - choices that keep the measurement honest. The test is free to take, and your result is compared with the results of other people. Your free result shows whether you scored below average, within the average range, or above average; the exact score and percentile come with the detailed report.

The test targets fluid intelligence (Gf): the capacity to reason and solve novel problems independently of acquired knowledge. In Cattell's influential distinction, fluid intelligence is the on-the-spot reasoning power you bring to a new problem, as opposed to crystallized intelligence (Gc), the accumulated knowledge and verbal skill you have learned. Abstract matrix reasoning is among the purest available measures of Gf, because solving the puzzles depends on inference rather than on anything you could have studied.

What makes matrices a strong measure is well understood at the level of cognitive processing. Carpenter, Just, and Shell showed that item difficulty rises with the number and abstraction of rules a solver must induce and hold in mind at once, which is why the hardest items demand managing several transformations simultaneously - a heavy load on working memory and goal management, the machinery that underlies fluid reasoning. A high score signals strong abstract reasoning; because Gf correlates highly with the general factor g, it is also a good narrow indicator of broad cognitive ability.

Matrix-style reasoning is a well-studied measure of fluid intelligence, and decades of research confirm it loads heavily on the general factor. The cognitive account of why it works - difficulty scaling with the number of rules to be managed - was set out by Carpenter, Just, and Shell and remains the standard explanation of what matrix items tap.

Scores here are reported on the familiar IQ metric (population mean of 100, standard deviation of 15), and like all our online tests they are capped at 160 because an unsupervised instrument cannot certify extreme values. Note the scope: this is a single-domain test of abstract reasoning, so a high score signals strong fluid ability rather than an exact overall IQ. For a broader estimate, pair it with our multi-domain battery; for high-stakes purposes, only an individually supervised, professionally administered test is appropriate.