Validity of Measurement

Validity is an inferential process that, when applied to problems of measurement, includes questions internal to the entities being measured and external to those direct observations. As theoretical constructs are translated into variables, be they ideas, feelings, behaviors, or objects, their properties are appraised and interpreted. Conceptually speaking, measurement validity is the means by which investigators use such appraisals and interpretations to defend the existence of a construct. Procedures for establishing measurement validity differ according to disciplinary assumptions about the nature of science and what constitutes evidence. Thus, measurement validity involves a range of complex, multidimensional approaches to appraising and interpreting information that are governed by the characteristics of the variables being measured.

Because sound measurement involves a complete assessment of those properties that comprise ...

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