Authoritative guides on IQ testing, scoring methodology, careers, and our product.
Only 5 occupations clear both the high-cognitive-demand bar and the $140k+ BLS mean-wage bar. A four-source synthesis of what IQ 130 buys you in 2026.
Why working memory caps expert performance, what the deliberate-practice meta-analyses show, and what to train when more reps stop working. The science.
We audited 7 popular IQ-to-career tools against published validity evidence. Only 1 of 7 disclosed a coefficient. Here is what the field's research says.
Forced-rank quotas downgrade high performers and lift their voluntary exit hazard 34% at 18 months. Here's what the research says, and what to do next.
Decade-by-decade IQ data from Hartshorne, Salthouse, Schaie, and Singh-Manoux shows no single peak age. See which abilities decline, hold, or rise after 45.
The Cognitive Demand Index maps IQ by occupation across 100 US jobs using O*NET reasoning data and BLS 2024 wages. See where brain power and pay diverge.
National IQ averages vary dramatically, but the data is more contested than most sources admit. Here's what the science shows, and what it means for you.
Evidence-based strategies to prepare for CCAT, Wonderlic, and PI Cognitive assessments. Learn what these tests measure and how to score your best.