What does validity in a selection test measure?

Validity in the context of a selection test is fundamentally about measuring how accurately the test predicts an individual's job performance. If a selection test has high validity, it means that the scores from that test are good indicators of how well a candidate will perform in a specific job role. This concept is crucial in the field of human resources and recruitment because it helps organizations ensure they are selecting the right candidates who possess the necessary skills and competencies to succeed in their positions.

When a test accurately reflects the abilities and qualities required for the job, it enhances the likelihood of hiring individuals who will meet or exceed performance expectations. This has significant implications for organizational effectiveness, employee satisfaction, and overall productivity.

While reliability, which refers to the consistency of test results over time, is important, it does not directly measure the ability of the test to predict job performance, which is what validity addresses. The number of people taking the test and the complexity of the test questions are not relevant to the concept of validity in measuring job performance.