Frederick Irving Herzberg (April 18, 1923 – January 19, 2000) born in Massachusetts was an American psychologist who became one of the most influential names in business management. He is most famous for introducing job enrichment and the Motivator-Hygiene theory. His 1968 publication "One More Time, How Do You Motivate Employees?" had sold 1.2 million reprints by 1987 and was the most requested article from the Harvard Business Review. Herzberg attended City College of New York, but left part way through his studies to enlist in the army. As a patrol sergeant, he was a firsthand witness of the Dachau concentration camp. Herzberg believed that this experience, as well as the talks he had with other Germans living in the area, was what triggered his interest in motivation. He graduated from City College in 1946 and moved to the University of Pittsburgh to undertake post-graduate workplace while teaching as a professor of psychology at Case Western Reserve University in Cleveland and later moved to the University of Utah where he held the position of professor of management in the college of business.