Ledyard Tucker

Ledyard Romulus Tucker (19 September 1910 – 16 August 2004) was an American mathematician who specialized in statistics and psychometrics. His Ph.D. advisor at the University of Chicago was Louis Leon Thurstone. He was a lecturer in psychology at Princeton University from 1948 to 1960, while simultaneously working at ETS. In 1960, he moved to working full-time in academia when he joined the University of Illinois. The rest of his career was spent as professor of quantitative psychology and educational psychology at UIUC until he retired in 1979. Tucker is best known for his Tucker decomposition and Tucker–Koopman–Linn model. He is credited with the invention of Angoff method.

Ledyard R. Tucker
Born	(1910-09-19)September 19, 1910 Glenwood Springs, Colorado
Died	August 16, 2004(2004-08-16) (aged 93) Savoy, Illinois
Nationality	American
Alma mater	University of Colorado University of Chicago
Known for	Angoff method Tucker decomposition Tucker–Koopman–Linn model
Scientific career
Fields	Mathematics
Institutions	Educational Testing Service University of Illinois
Doctoral advisor	Louis Leon Thurstone

In 1957 he was elected as a Fellow of the American Statistical Association.^[1]

He died at his home in Savoy, Illinois, on August 16, 2004, aged 93.

Selected publications

• Ledyard Tucker (September 1966). "Some mathematical notes on three-mode factor analysis". Psychometrika. 31 (3): 279–311. doi:10.1007/BF02289464. PMID 5221127. S2CID 44301099.

References

1. View/Search Fellows of the ASA Archived 2016-06-16 at the Wayback Machine, accessed 2016-07-23.

• A Conversation with Ledyard R Tucker by Neil J. Dorans
• Remembering Ledyard R Tucker by Tom Stewart