John L. Horn

John L. Horn
Born
John Leonard Horn

(1928-09-07)September 7, 1928
St. Joseph, Missouri, U.S.
DiedAugust 18, 2006(2006-08-18) (aged 77)
Los Angeles, California, U.S.
Alma materUniversity of Denver
University of Melbourne
University of Illinois (PhD 1965)
OccupationCognitive psychologist
Spouse(s)Colleen Hoskins, Penelope Trickett, PhD
Childrentwo sons, two daughters

John Leonard Horn (September 7, 1928 – August 18, 2006) was a scholar, cognitive psychologist and a pioneer in developing theories of intelligence. The Cattell-Horn-Carroll (CHC) theory is the basis for many modern IQ tests. Horn's parallel analysis, a method for determining the number of factors to keep in an exploratory factor analysis, is also named after him.

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