Abstract
Summary The validity of various types of tests for selecting card punch operators is reviewed. A new test for the selection of card punch operators, the Card Punch Aptitude Test (CPAT) is described. It consists of two parts, letter‐digit substitution and name checking. Letter grade norms for female operators are available. For five samples of operator trainees totaling 532 cases, the CPAT had validities of .23 to .44 with training course letter grades. For three samples of employed operators totaling 89 cases, the CPAT correlated .45, .50, and .67 with supervisor ratings.
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