Frederic Mather Lord (November 12, 1912 – February 5, 2000) was a psychometrician for Educational Testing Service.
The SAT, GRE, GMAT, LSAT and TOEFL are all based on Lord's research.
[2] He was the source of much of the seminal research on item response theory,[3] including two important books: Statistical Theories of Mental Test Scores (1968, with Melvin R. Novick, and two chapters by Allan Birnbaum), and Applications of Item Response Theory to Practical Testing Problems (1980).
Lord's research shaped the SAT, GRE, GMAT, LSAT and the TOEFL.
[1][2] Lord was called the "Father of Modern Testing" by the National Council on Measurement in Education.