In 1905, the French psychologist Binet and his assistant Simon designed 30 test topics to determine the level of evaluees 'intelligence, thus creating the first IQ test. They used the tested score (" intellectual age ") and divided it by the person's actual age to arrive at their intelligence quotient.
自從西元一九○五年，法國的心理學家比涅和他的助手西蒙，設計出三十個測驗題目來鑑定受測者的智力高低，開創了智力測驗的方式，他們用測驗的得分（心智年齡），除以實際年齡，得出智力商數，簡稱為智商，即 IQ，來顯示受測者的智力程度。