Louis Leon Thurstone was an American pioneer in the fields of psychometrics and psychophysics. He conceived the approach to measurement known as the law of comparative judgment, and is well known for his contributions to factor analysis. Wikipedia
Born: May 29, 1887, Chicago, IL
Died: September 29, 1955 (age 68 years), Chapel Hill, NC
Known for: Multiple factor analysis; Intelligence testing; Law of comparative judgment
Education: Cornell University and The University of Chicago
Spouse: Thelma Thurstone (m. 1924–1955)
Fields: Psychometrics