🧠 The man who invented IQ tests warned you not to take them too seriously.

Alfred Binet created the first practical intelligence test in 1905, not to rank people, but to identify which schoolchildren needed extra help. He called the idea of fixed, unchangeable intelligence "brutal pessimism" and spent his career arguing against it.

In 2012, neuroscientists at Western University tested 110,000 people while scanning brains with fMRI. They found human cognition runs on at least three independent neural networks: reasoning, short-term memory, and verbal ability.

Because these circuits operate independently, averaging them into a single IQ score is like averaging your height, weight, and shoe size into one "physical number."

Source: doi.org/10.1016/j.neuron.2012.…

#neuroscience #psychology #science