"IQ" is roughly[1] based on the linguistic parts of the brain. At least Chomsky can find no evolutionary justification for language. A more modern reading is t

"IQ" is roughly[1] based on the linguistic parts of the brain. At least Chomsky can find no evolutionary justification for language. A more modern reading is that better communications does have evolutionary advantages. [1] The Stanford-Binet was developed to figure out who carried the radio in fire teams for WWII.