American IQ test scores have dropped during a recent 13-year period, a remarkable finding that runs counter to the well-established trend of increasing IQ scores throughout much of the 20th century.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A new map showcases which U.S. states have the highest IQ, offering ...

An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. The abbreviation "IQ" was coined by the psychologist William ...

Average IQ refers to the baseline score of the general population. Therefore, to have an average IQ means that you are within normal intelligence range. However, don't worry too much about what your ...

IQ is a standardized measure of brain power that’s short for Intelligence Quotient. IQ tests have been around for over a hundred years and are used by scientists, schools, nonprofit organizations, and ...