During the Great Depression, Paterson and Darley brought these concepts to the
Minnesota Employment Stabilization Research Institute and used psychological
tests and other assessment devices to analyze the vocational abilities of the
unemployed. Case histories, staffing for diagnosis and prognosis, provision of
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educational and vocational training, and placement services were all used in a
comprehensive attempt to place people in jobs (Williamson & Biggs, 1979, p. 92).
At approximately the same time, Williamson was appointed director of the
University of Minnesota Testing Bureau. The task of the bureau was to apply
those guidance procedures developed by Paterson to the educational and
vocational problems of students (Williamson & Biggs, 1979, p. 92).