South Korea had the highest average IQ worldwide ... The data was collected through an IQ test based on Raven's Matrices technique, a non-verbal test used to measure general human intelligence ...

The state with the highest IQ is Massachusetts ... disparities likely factor into each state's average IQ, highlighting the "complex matrix of conditions that influence intellectual development ...

The achievement showcases the high intellectual capacity of Iranian people ... etc.). The International IQ test is inspired by Raven’s Matrices (developed by psychologist John Carlyle Raven in 1936).