Learn about IQ testing, brain training, and cognitive science
Average IQ by Age: How Scores Change Across the Lifespan IQ scores are not fixed across the human lifespan. Research stretching back decades shows that both the average score reported for a given age ...
What Is a Good IQ Score? Understanding the Scale from 85 to 145 The question "what is a good IQ score?" sounds simple but has a more nuanced answer than most people expect. IQ scores follow a bell-cur...
IQ 90: A Score on the Low Side of Average An IQ score of 90 is one of the most misread numbers on the scale. Because it sits below 100 — the population mean — many people assume it signals something p...
IQ 85 to 89: Understanding the Low-Average Range An IQ score between 85 and 89 is one of the most frequently misunderstood positions on the IQ scale. It sits just below the statistical center, yet it ...
IQ 140 and Above: Exploring the Gifted Range An IQ score of 140 sits in a part of the bell curve that few people ever reach. It represents a statistical rarity — roughly 1 person in 250 — and it is fr...
IQ 110: What a Slightly Above-Average Score Indicates An IQ score of 110 is among the most commonly reported results — and one of the most ambiguously described. It sits in a narrow zone between "aver...
IQ 130: The Top 2% Threshold and What It Actually Means An IQ score of 130 carries unusual weight in popular discussion. It is widely cited as the boundary between "superior" and "gifted," and it is t...
IQ 100: What the Exact Average Score Really Means IQ 100 is the score people hear about most often — and misunderstand most often. It is not a description of a person's ability in absolute terms. It i...
IQ 120: The Upper Boundary of "High Average" Explained An IQ score of 120 sits at one of the more notable boundary points on the cognitive scale. Depending on which classification system you use, 120 ...
Free IQ Test Online: What to Expect, How They Work, and What Your Score Means Millions of people search for a free IQ test online every month. Whether driven by curiosity, a desire to benchmark cognit...
What Is an IQ Test? Understanding Scores, History, and How Intelligence Works The term "IQ" gets thrown around a lot, but how many people actually understand what an IQ test measures or what the score...
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