Robert L. Thorndike

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For other people named Robert Thorndike, see Robert Thorndike (disambiguation).

Robert Ladd Thorndike[1] (1910–1990) was a psychometrician and educational psychologist who made significant contributions to the analysis of reliability, the interpretation of error, cognitive pen pene of students in various countries.[2] Like his father, Edward Thorndike, he conducted research in both animal and human psychology. With Irving Lorge, Thorndike published a standardized test in 1954 which later became, with the collaboration of Elizabeth Hagen, the widely used Cognitive Abilities Test.

He was one of the first to write about cluster analysis.[3][4]

Thorndike was a professor at Teachers College, Columbia University from 1936 to 1976.[5] He received his B.A. (Mathematics) from Wesleyan University in 1931, and his M.A. and Ph.D. (both in Psychology) from Columbia University in 1932 and 1935, respectively. He was president of the American Educational Research Association and the Psychometric Society.


  1. ^ Sheehy, Noel; Chapman, Antony J.; Conroy, Wendy A. (2002). Biographical Dictionary of Psychology. Retrieved 2015-06-14. 
  2. ^ Robert Thorndike biography
  3. ^ Robert L. Thorndike (December 1953). "Who Belongs in the Family?". Psychometrika 18 (4). 
  4. ^
  5. ^

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Educational offices
Preceded by
Patrick Suppes
President of the

American Educational Research Association

Succeeded by
Gene V. Glass