IQ Blog
Research-backed guides on intelligence, IQ testing, and cognitive performance.
The 5 Categories of Questions in an IQ Test
Visual matrices, verbal analogies, number sequences, working memory, and spatial reasoning: here is what each question type actually measures in a standard IQ test.
Average IQ by Profession: What Does Your Job Say About Your Intelligence?
Research shows different professions attract workers with different average IQ ranges. Here is what the data shows - and why IQ alone never tells the full story.
What Is IQ? A Complete Guide to Intelligence Quotient
IQ stands for Intelligence Quotient. This guide covers what it measures, what it misses, how normal distribution works, and which tests are actually worth taking.
Does IQ Predict Success? What the Research Actually Shows
IQ predicts academic grades and job performance - but not as strongly as many assume. Here is what 80 years of research shows about intelligence and life outcomes.
Average IQ in the United States: By State, Age, and How It Compares Globally
The US national average IQ is 98. Here is the breakdown by state, how it changes with age, and where America ranks among countries worldwide.
IQ vs EQ: Which Matters More for Success?
IQ predicts academic and technical performance. EQ predicts leadership and relationships. Research from TalentSmart found EQ accounts for 58% of job performance. Here's the full comparison.
Mensa IQ Test: How to Qualify and What to Expect
Mensa requires top 2% IQ - a score of 130 or above. Here is how the qualification process works, what tests are accepted, and how to prepare.