Cognitive Reflection Test: Answers & What It Measures
The Cognitive Reflection Test answers are 5 cents, 5 minutes and 47 days. Why the intuitive answers fail, what your score means, and whether knowing the answers really invalidates it.
9 min read
IQ Insights
In-depth, expert-reviewed guides on IQ scores, intelligence testing, demographics and how to take a test — from the IQCognify editorial team.
Latest articles
Cognitive Tests Explained: Types, Scores & What They Measure
Cognitive tests fall into three unrelated categories. How clinical screens like the MoCA and MMSE differ from IQ tests, what the scores mean, and why the 26/30 cutoff misleads.
10 min read
Mensa Norway IQ Test: What Your Score Actually Means
The Mensa Norway test is 35 puzzles in 25 minutes, scored 85–145. Why 145 is a ceiling and not a score, why it can't qualify you for Mensa, and how accurate it really is.
8 min read
Einstein's IQ: Was It Really 160? What the Record Shows
Einstein never took an IQ test. Where the 160 figure came from, why earlier sources said 205 and 207, and why no one's IQ is meaningfully 160.
9 min read
Is an IQ Score in the 80s Good? What 80–89 Really Means
An IQ in the 80s is below average but normal — the 9th to 23rd percentile. What the “Low Average” label means, why it is not an intellectual disability, and how much the number is worth.
8 min read
Emotional Intelligence Tests: What They Measure & Whether They Work
Ability tests, trait questionnaires and mixed models measure different things. How the MSCEIT is scored, why self-report EI is mostly personality, and why there is no EQ score.
7 min read
Left Brain vs Right Brain: What the Evidence Actually Shows
There are no left-brained or right-brained people — 1,011 brains and 14 million connections found none. What is genuinely lateralised, and what Sperry warned about.
7 min read
Fluid vs Crystallized Intelligence: The Two Halves of IQ
Fluid intelligence solves novel problems; crystallized intelligence applies what you know. Why one declines with age and the other keeps rising into your sixties.
7 min read
Executive Function: What It Is and Why Its Measures Disagree
Inhibition, working memory and cognitive flexibility. The unity-and-diversity framework, the task impurity problem, and why lab tasks and rating scales correlate at only .19.
6 min read