Collegiate Affiliation

Currently, my research activities are focused on the systematic modeling of the substantive latent structure of occupational performance and its determinants. We have proposed, and continue to refine, an eight factor model of performance that can be used to characterize individual performance in virtually all work roles and across functional areas and organizational levels. We have developed and tested substantive models for customer service, for team member performance, and for the ability versus training and experience determinants of high level technical expertise. Currently, we are investigating the dimensionality of ethical performance. These efforts are built on a fundamental belief that individual performance at work is the most critical dependent variable in applied psychology and modeling the latent structure of performance is at least as important as specifying the latent structure of cognitive ability or personality. Related projects concern the development of occupational classification structures for purposes of career exploration and job seeking, and using the U.S. Department of Labor's Occupational Information Network (O*NET) to further model the determinants of performance.

Educational Background & Specialties
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Educational Background

  • Ph.D.: , University of Minnesota, 1964 -
  • M.S.: , Iowa State University, 1960 -
  • B.S.: , Iowa State University, 1959 -


  • industrial psychology
  • industrial training and development
  • occupational analysis
  • occupational performance
  • organizational psychology
  • performance modeling
  • prediction and selection models