![]() ![]() Validity is a bigger concern in the social sciences, where you can measure elusive concepts such as positive outlook and self-esteem. You might have a biased bathroom scale if it tends to read too high or too low-but it still measures weight. Validity is a smaller concern for tangible measurements like height and weight. Or do the measurements reflect something else? Does the instrument measure what it says it measures? It’s a question that addresses the appropriateness of the data rather than whether measurements are repeatable. Researchers need to consider whether they’re measuring what they think they’re measuring. This concept is a broader issue than reliability. ![]() Validity refers to whether the measurements reflect what they’re supposed to measure. When assessing studies, evaluate data collection methodologies and consider whether any issues undermine their reliability. ![]()
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