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The hypothesis was tested that the standard deviation of employee output as a percentage of mean output (SD,,) increases as a function of the complexity level of the job. The data examined were adjusted for the inflationary effects of measurement error and the deflationary effects of range restriction on observed SDy figures, refinements absent from previous studies. Results indicate that SDT increases as the information-processing demands (complexity) of the job increase; the observed progression was approximately 19%, 32%, and 48%, from low to medium to high complexity nonsales jobs, respectively. SDP values for sales jobs are considerably larger. These findings have important implications for the output increases that can be produced through improved selection. They may also contribute to the development of a theory of work performance. In addition, there may be
Hunter et al. (Thu,) studied this question.