A rigorously designed test of fluid intelligence — the capacity to reason, recognize patterns, and solve novel problems. Pure geometry, zero verbal content, equally valid across any linguistic or cultural background.
Both use the same question architecture and scoring model. The full test samples more items per reasoning type, producing a more precise standard score.
Every item isolates one of four nonverbal reasoning capacities, rendered entirely in pattern and geometry. Your composite score reflects fluid intelligence; the subscores show where your reasoning runs deepest.
Most IQ tests in widespread use — the Wechsler, the Stanford–Binet, any test with verbal subscales — implicitly privilege the cultural and linguistic environment of the test's origin. A culture-fair test doesn't.
The premise goes back to Cattell's distinction between fluid intelligence (Gf) — the raw capacity to reason about novel problems — and crystallized intelligence (Gc), the knowledge accumulated by that capacity operating in a specific environment. Vocabulary, general knowledge, arithmetic: all Gc, all culture-loaded.
Fluid intelligence is a fair target because pattern recognition, analogy, and abstraction operate regardless of which language you happen to think in. A well-designed matrix problem poses the same cognitive demand whether the test-taker grew up in São Paulo, Lagos, or Rotterdam.
The aim is not to eliminate all cultural variance — an impossible target — but to minimize it far enough that score differences reflect reasoning capacity rather than linguistic fluency or educational exposure. — On the design of nonverbal cognitive assessments
This test follows the tradition established by Raven's Progressive Matrices and the Cattell Culture Fair Intelligence Test: all items are geometric, no reading is required, and the scoring norms are calibrated to produce comparable results across populations.