Validity
Definition
Validity refers to the extent to which a measurement or test accurately measures what it is intended to measure.
Analogy
Think of validity as hitting the bullseye in archery. If your aim is accurate and you consistently hit the center of the target, then your shots are valid. But if you miss the mark and consistently hit outside the target, then your shots lack validity.
Related terms
Bias: Bias refers to any systematic error or distortion that affects the results of a study or measurement.
Construct Validity: Construct validity refers to how well a test or measurement accurately assesses an abstract concept or theoretical construct.
Content Validity: Content validity refers to how well a test or measurement covers all aspects of what it intends to measure.
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