Two of the most well-known IQ tests are 'Stanford-Binet' and 'Cattell' (explained in more detail below). In practice, qualifying for Mensa in the top 2% means scoring 132 or more in the Stanford-Binet test, or 148 or more in the Cattell equivalent.

All in all, extensive research shows that IQ scores can play a critical role in determining positive life outcomes like success in academic performance from elementary school through college, job performance, and occupational status.