Elon Musk's IQ: What's Actually Verified
"155" is everywhere online — but no test, examiner, or date backs it. Here's what's actually documented, and why estimates range from 100 to 160.
6 min read
IQ Insights
In-depth, research-based guides on IQ scores, intelligence testing, demographics and how to take a test — from the IQCognify editorial team.
Latest articles
IQ Test With Certificate: What "Certified" Actually Means
Almost any site can put your name on a PDF and call it "official." Here's what actually separates a real certificate from a printable one.
5 min read
What Is the Average IQ of Doctors? The Number vs. the Data
"125" gets repeated everywhere with no source. The actual data traces to 30 physicians in one dataset. Here's what's really been measured.
11 min read
IQ Test: 10 Questions — What a Short Test Can Tell You
A 10-question IQ test isn't new — a validated short-form version has existed since the 1960s. Here's what the real research says about the format.
5 min read
Montreal Cognitive Assessment (MoCA)
The MoCA screens for mild cognitive impairment, not IQ — and it's sensitive enough that 4 in 10 people without dementia can score below "normal."
7 min read
Sex Differences in Intelligence: What the Evidence Shows
On general intelligence, the average difference between sexes is negligible. The real, replicated finding is about variability — not average IQ.
4 min read
Machine Intelligence Test: How AI Is Measured
From the Turing Test to AI scoring 140+ on Mensa — how machine intelligence testing actually works, and why the headline numbers mislead.
6 min read
Does an IQ Test Need Your Email? What Free Tests Collect
Some free IQ tests ask for your email before showing results, others don't. Here's what that data is actually used for, and how to tell them apart.
3 min read
Neuromyths in Education: The Brain Myths Teachers Believe
Learning styles, the 10% brain, left- vs right-brained learners — surveyed teachers endorse these at strikingly high rates. What the evidence says.
5 min read