author

Truman Lee Kelley

1884–1961

A pioneer of educational measurement, this early psychometrician helped shape how intelligence and test scores were studied in American schools and universities. His work on statistics, testing, and mental measurement influenced both psychology and education for decades.

1 Audiobook

Stanford Achievement Test, Ed. 1922 : Advanced Examination, Form A, for Grades 4-8

Stanford Achievement Test, Ed. 1922 : Advanced Examination, Form A, for Grades 4-8

by Truman Lee Kelley, G. M. (Giles Murrel) Ruch, Lewis M. (Lewis Madison) Terman

About the author

Born in 1884, Truman Lee Kelley was an American psychologist and statistician best known for his work in psychometrics—the study of psychological and educational measurement. He taught at Teachers College, Columbia University, and became known for bringing careful statistical thinking to questions about intelligence, aptitude, and school testing.

Kelley wrote influential books including Statistical Method, Interpretation of Educational Measurements, and Crossroads in the Mind of Man. His research helped develop more rigorous ways to analyze test results and understand individual differences, at a time when educational testing was rapidly expanding.

He died in 1961, but his name remains important in the history of psychology and measurement. Readers interested in the foundations of testing, intelligence research, and applied statistics will find him to be a key early figure in the field.