What Do “Validation” and “Reliability” Mean With Regard To Employment Tests?
“Validity” refers to how well an employment test measures what it is supposed to measure. A validation study is a systematic gathering of data and information to support a claim that an employment test is valid, or (in other words) that it measures what it says it measures. “Reliability” refers to the consistency in performance of an employment test: does it measure the same knowledge, skill, or ability every time it is used?