![]() It is the most important yardstick that signals the degree to which research instrument gauges, what it is supposed to measure. In statistics, the term validity implies utility. ![]() Reliability refers to the degree to which scale produces consistent results, when repeated measurements are made.Ī reliable instrument need not be a valid instrument. Validity implies the extent to which the research instrument measures, what it is intended to measure. This article will break down the fundamental differences between validity and reliability. Validity is all about the genuineness of the research, whereas reliability is nothing but the repeatability of the outcomes. These are certain preferred qualities which gauge the goodness in measuring the characteristics under consideration. For the purpose of checking the accuracy and applicability, a multi-item measurement scale needs to be evaluated, in terms of reliability, validity, and generalizability.
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