General IQ (50 items)

This is a full-length general intelligence test: 50 items across four reasoning domains - verbal reasoning (16 items), logical and letter-number series (9), abstract matrix reasoning (11), and spatial 3D rotation (14). Sampling several distinct domains matters, because general intelligence is precisely what diverse reasoning tasks share: a single task type measures a narrower ability, while a balanced battery estimates the general factor.

Plan for roughly 40 minutes of focused work. Items get harder as you progress, and your result is placed on a normed scale relative to the adult population, not as a pass or fail. Your free result shows your IQ band on the population curve plus one reasoning domain; the exact score, percentile, and full domain breakdown come with the detailed report.

The test estimates general cognitive ability (the g factor) - the broad capacity to reason, see patterns, and solve novel problems - through four domains:

A century of research consistently finds that performance on diverse cognitive tasks is positively correlated - the basis of the general factor, g. Composite scores built from several reasoning domains, like this test, are among the most reliable measurements in psychology and predict educational attainment, job performance, and training success better than any other single psychological variable.

Scores here are reported on the familiar IQ metric (population mean of 100, standard deviation of 15) using norms derived from adult test-taker data, with a documented ceiling: an online, unsupervised test can meaningfully distinguish scores within the broad population range but cannot certify extreme values, so results are capped at 160. For high-stakes purposes (clinical or educational placement), only an individually administered, professionally supervised test is appropriate - this test is built for serious self-assessment.