John L. Horn

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
John L. Horn
Picture of John L Horn.jpg
John Leonard Horn

(1928-09-07)September 7, 1928
DiedAugust 18, 2006(2006-08-18) (aged 77)
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 multiple intelligence. Horn, together with Raymond Cattell, developed the theory of crystallized and fluid intelligence. This theory was later combined with the work of John Carroll and called the Cattell–Horn–Carroll theory. The CHC theory is the basis for many modern IQ tests.[1]


He started his career as a Lecturer of Educational Psychology at the University of California, Berkeley in 1967. He was Associate Professor of Psychology at the University of Denver from 1970 to 1986. Meanwhile, he was also Research Associate at the Institute of Psychiatry of the University of London in England in 1972 and Research Associate of Psychiatric Clinic at the University Hospital in Lund, Sweden 1982. He was then Professor of Psychology & Head of Adult Development and Aging University of Southern California from 1986 to 2006.

He received numerous awards, including: Research Career Development Award, National Institutes of Health (1968–1972); Annual Prize for Distinguished Publications in Multivariate Psychology (SMEP) (1972); Lifetime Achievement Award, SMEP (1992). Horn also served as president of the National Association for the Advancement of Colored People and the American Civil Liberties Union.[2]

He died in 2006.


  1. ^ "PsycNET". Retrieved 6 October 2017.
  2. ^ McArdle, John J. (2007). "John L. Horn (1928-2006)". American Psychologist. 62 (6): 596–7. doi:10.1037/0003-066X.62.6.596. PMID 17874900.

External links[edit]