Gary Don Gottfredson

Gary Don Gottfredson is an American psychologist who worked with John L Holland on a few new interest inventories. In 1991, they developed the Position Classification Inventory (PCI) which was an outgrowth of their attempt to extend the system to all occupations in 1982, 1989, and 1996. Later in 1994, they developed the the Career Attitudes and Strategies Inventory.

Background
Was married to Linda Gottfredson