A NOTE ON DIRECT RANGE RESTRICTION CORRECTIONS IN UTILITY ANALYSIS
证明在效用分析中无需使用直接范围限制校正公式，通过基于员工群体的回归系数即可得到相同结果，且计算更简便。
Brogden's equations for employment test utility analysis have been used in conjunction with direct range restriction correction formulas, because the data used typically come from selected applicant (incumbent) samples. We show that the use of direct range restriction corrections in utility analysis is not needed. Identical results can be obtained using a simpler equation that employs a regression coefficient based on the employee (i.e., restricted or job incumbent) population. This utility estimation procedure, which does not employ range restriction corrections, is derived and discussed. We recommend that this new equation be used in the practice of selection utility analysis because it not only provides identical utility estimates to those obtained using current equations that employ direct range restriction correction formulas, but also is computationally simpler.