William Stern in 1912 took an individual's mental age, divided it by chronological age, and got the ratio, which he called intelligence quotient. Intelligence quotient (IQ) is a score used to express a person's relative intelligence. In modern society, where competition is high in different fields, intelligence tests are widely used. IQ tests are also starting to appear in job interviews as part of the application process. Whether IQ tests should be included in the employability process remains a controversial issue. IQ tests are standardized tests, meaning that the tasks appearing in the test are the same for all participants, the conditions, the instructions given and the time required to complete them. completion is equal for each candidate. Standardized tests help prevent stereotypical errors, for example, there is no bias based on ethnic or cultural background, age, or differences in appearance. However, there are notable gender differences in performance on various tasks, particularly mental rotation tasks (MRT). IQ t...