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The influences on simulated personnel selection decisions of a job applicant's intellectual ability and the degree to which his opinions agreed with those of an evaluator were investigated in a factorial experiment using 78 undergraduates. Both variables significantly ( p < .01) influenced recommendations to hire or not hire the applicant. The results were discussed with respect to the influence of valid and invalid job-success predictors on selection decisions.
Griffitt et al. (1970) studied this question.