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An adult cognitive reasoning estimate

Measure carefully.
Interpret humbly.

Fifty problems, drawn fresh for each sitting from a bank of 145 original items, sample fluid, quantitative, verbal, spatial, and working-memory performance. Scoring is fully transparent: raw correct counts, a plainly labeled measurement band, and a per-domain profile — no black-box curve fitting, no invented precision.

The important limitation: a calibrated IQ score requires representative age norms, demonstrated reliability and validity, standardized administration, and often a qualified examiner. This browser test has not yet been normed on a representative population. It therefore reports a raw score (correct out of 50), an experimental IQ estimate fitted from content-rated question difficulties, a measurement band for this sitting, and a domain profile — and no percentiles, until a norming study exists. It is designed for self-understanding, not clinical diagnosis, school placement, or employment decisions.
50 sampled items · about 45 min
Five cognitive domains
No account · nothing uploaded
Why this test — the research

Why: reasoning under time pressure feeds every other work skill.

Evidence: Schmidt & Hunter’s 85-year meta-analysis ranked general mental ability the top predictor of job performance (≈ .51) and training success; a 2022 re-analysis argues ≈ .31 under stricter corrections — the ranking holds either way.

Sources: Schmidt & Hunter (1998), Psychological Bulletin · Sackett et al. (2022), Journal of Applied Psychology

Best on a laptop or tablet. Each sitting draws a fresh sample of 50 from the 145-item bank, so retakes differ — but do not retake for at least six months; practice can inflate the result.

45:00

Scoring your responses…

Raw correct counts per domain — nothing fitted, nothing hidden

Raw score — experimental, not normed

Score and measurement band

What the result says—and does not say

Your profile

Performance by domain

Strongest evidence

Best development target

Scoring and session notes

Session notes

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Method note: fixed-form sampled administration — each sitting draws 50 items (10 per domain) from a 145-item bank of original items; scoring is raw correct counts with a binomial measurement band. No percentiles are reported pending a norming study. This is not the WAIS and uses no protected WAIS items. Testing principles: Standards for Educational and Psychological Testing; context for formal adult assessment: Pearson WAIS-5 overview; web testing caution: APA on responsible web testing.
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