For ages, people have tried to categorize humans by intelligence.

However, it wasn't until the early 20th century that attempts were made to provide an actual

quantifiable measure of intelligence.

In 1912, a German psychologist by the name of William Stern dubbed a method of

scoring intelligence tests called an intelligence quotient. Ever since then, there has been controversy

surrounding the method of scoring and the very idea of scoring

intelligence. Learn more about the Intelligence Quotient, also known as an IQ score, on this episode

of Everything Everywhere Daily. everything everywhere daily. Book your ticket to happiness with Sun Express Airlines. So, The concept of intelligence is one that everyone is familiar with. We all know people

who are intelligent and we know people who are probably not so intelligent.

However, while everyone is familiar with it,

it is a very slippery concept, and it's one that's hard to nail down.

And it's especially hard to quantify.

But that fact didn't stop people from trying.

In the 19th century, the English statistician Francis Galton tried to show that intelligence

was a hereditary trait, like other physical attributes, but he couldn't really find any statistical evidence

for his claim.

The first real step towards quantifying intelligence came in 1905, when the French psychologist

Alfred Bineet and Theodore Simon

published the Benet Simon test.

The test was only a test of verbal abilities and it was primarily targeted

towards children to evaluate their development.

In particular, it wasn't designed to test for gifted

...