who created the first iq test

The first widely recognized IQ test was created by French psychologist Alfred Binet, together with his collaborator Théodore Simon, in 1905.

Quick Scoop

• Alfred Binet is generally regarded as the creator of the first formal IQ test, known as the Binet–Simon scale.

• He was commissioned by the French government to develop a way to identify schoolchildren who needed extra educational support, not to label people permanently.

• The Binet–Simon test focused on tasks involving memory, attention, and problem‑solving, and it introduced the idea of “mental age.”

• Later psychologists (like Lewis Terman at Stanford) adapted Binet’s work into what became the Stanford–Binet IQ test, which popularized the modern IQ score.

In other words, when people ask “who created the first IQ test,” the historically accepted answer is Alfred Binet (with key contributions from Théodore Simon).

TL;DR: Alfred Binet, a French psychologist, created the first formal IQ test (the Binet–Simon scale) in the early 1900s to help identify children who needed extra help in school.

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