The intelligence quotient, or IQ, is a measure of intelligence. An IQ test is designed to measure a person's cognitive ...

Alfred Binet, a French psychologist, developed the first official IQ test in the early 20th century to measure intellectual abilities. An average IQ score is set at 100, with most people scoring ...

South Sudan ranks among the lowest, with an average IQ score of 61.63 (Rank 188). This score is often understood against the backdrop of immense humanitarian and infrastructural challenges that have ...

Taiwan and Hong Kong also recorded very high scores, around 107. However, they were not included in the final country rankings.