Louis Thurstone Jun 2026

A foundational scaling model for psychological measurement, analogous to the “law of relativity” in psychophysics.

Louis Leon Thurstone was a pioneering American psychologist who made significant contributions to the field of psychology, particularly in the areas of psychometrics, intelligence testing, and attitude measurement. He is considered one of the most influential psychologists of the 20th century. louis thurstone

Thurstone was born on August 29, 1887, in Chicago, Illinois, to Swedish immigrant parents. He grew up in a family of modest means and was the eldest of six children. Thurstone's early education took place in Chicago, where he attended public schools. He developed an interest in science and mathematics, which led him to pursue a degree in engineering at the University of Chicago. However, he soon switched to psychology, earning his Bachelor's degree in 1909. Thurstone was born on August 29, 1887, in