IQ classification is the practice of categorizing human intelligence, as measured by intelligence quotient (IQ) tests, into categories such as "superior" and "average". [1][2][3][4]

An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. [1] Originally, IQ was a score obtained by dividing a person's mental age score

2025年3月14日 · Since the publication of The Measurement of Intelligence in 1944 by the Romanian-born US psychologist David Wechsler (1896–1981), the standard definition of IQ has been the purely statistical deviation IQ. From: ratio IQ in A Dictionary of Psychology »

Second, the “ratio IQ” may be more meaningful than a “deviation IQ” to families planning instruction. In selecting a textbook or a class it is more helpful to know that a seven-year-old is approximately four years beyond his or her age than to know that s/he is one in four hundred.

斯坦福大学教授推孟于1916年发表了斯坦福——比内智力量表，首次引入了比率智商（Intelligence Quotient）的概念，开始以IQ作为个体智力水平的指标。 比率智商的计算公式：智商=（智力年龄 /实际年龄）x100

2022年10月14日 · 比率智商（ratio IQ）斯坦福——比內智力量表第二版的突出進步是引入了智商的概念，並把應用範圍推廣至全世界。 智商表示智力的相對水平，成為比較兒童聰明程度的指標。

2025年3月21日 · IQ, (from “intelligence quotient”), a number used to express the relative intelligence of a person. It is one of many intelligence tests. IQ was originally computed by taking the ratio of mental age to chronological (physical) age and multiplying by 100.

2013年4月28日 · Psychology Definition of RATIO IQ: Showing IQ as a ratio of mental age to chronological age, multiplied by 100

2020年10月25日 · 比率智商(Ratio IQ) 為了比較智力的高低，早期的智力測驗是使用比率智商的觀念，所謂比率智商就是 心理年齡(MA)除以生理年齡(CA)再乘以一百（即IQ=MA/CA×100） 。

计算公式为\(IQ=\frac{MA}{CA}\times 100\%\)，式中\(IQ\)表示比率智商，\(MA\)表示心理年龄或智力年龄，\(CA\)表示实足年龄或实际年龄。 依赖智力年龄与实足年龄的比值。