CB

Intelligence helps us acquire and use knowledge. Knowledge is what experience and learning have already put at our disposal.

How psychologists infer ability from observable performance, why the same person can perform differently across occasions, and where context belongs without turning every score into…

What can change, what tends to remain stable, how education affects cognitive ability, and why improving on a test is not automatically the same as increasing general intelligence.

What a pattern of cognitive scores really shows, how psychologists decide whether a difference is meaningful, and why a profile is evidence rather than a diagnosis.

How performance on many cognitive tasks becomes a standardized number, what 100 and 115 mean, and what an IQ score can and cannot tell us.

What it means to reason through a new problem versus use knowledge you have already acquired, how the two are measured, and why they are related rather than separate minds.

Why human cognitive ability is neither one undivided faculty nor a collection of unrelated talents—and what “both” means in practice.

What the general factor is, how researchers obtain it from many different cognitive tests, what an individual's g score means, and why g is not the same thing as IQ.

A scientific guide to what we mean by intelligence—in humans, other animals, artificial systems and the study of cognitive ability.