Background

* The Strong Interest Inventory was introduced in 1927 by E.K. Strong, a researcher at Stanford University, to help people exiting the military find jobs.

* First test was 1000 questions and only for men because Strong thought that men and women were not interested in the same careers.

* Beginning in the mid-fifties, graduate student David Campbell helped Strong revise the tests.

* It was revised later by Jo-Ida Hansan, and Campbell.

* The modern version is based on the Holland Codes by psychologist John L. Holland.