He devised a simple formula for calculating an index of intelligence, or intelligence quotient (IQ).
A) Theo Simon
B) William Stern
C) Franz Gall
D) Alfred Binet

Question

Quizplus · Accepted Answer

William Stern is credited with devising the formula for calculating IQ, which became known as the IQ test. Alfred Binet created the first intelligence test, but Stern's formula was used to standardize and measure the results. Theo Simon and Franz Gall did not contribute to the development of the IQ test.

He Devised a Simple Formula for Calculating an Index of Intelligence