Is IQ Distribution Bell-Shaped? Maybe, No
[February 16, 2026] In 1994, when Charles Murray and Richard Herrnstein published their book The Bell Curve: Intelligence and Class Structure in American Life, it immediately prompted widespread criticism. However, few disputed the idea that IQ would follow a bell-shaped distribution. Some who study intelligence now believe the IQ curve is more likely positively skewed. By ‘positively skewed,’… Read More »