2.5.2 ReliabilityAll selection info

2.5.2 ReliabilityAll selection information should be reliable Reliability refers to consistency of measurement or repeatability. A selection instrument, such as an achievement test, is said to be reliable if individuals obtain essentially the same scores each time they take the test. The higher a measuring instruments reliability, the greater the confidence that can be placed in the instrument.The Importance of ReliabilityThe issue of reliability has been considered extensively with respect to personnel testing. Test publishers include evidence of reliability in the examiner's manuals and in advertisements about the tests. However, reliability concerns more than just personnel testing the reliability of every selection variable should be examined, including application blanks, interviews, reference checks, and physical exams. The issue of reliability is also important for other human resource functions, especially performance evaluations. If a supervisor cannot reliably evaluate the performance of a subordinate, the evaluation should not be used for human resource decisions such as firing, promoting, or granting pay increases.