Abstract
Measurement is an essential element of education research. It is of extreme importance for determining the efficacy and legitimacy of educational practices that are now operationalized without benefit of professional consensus. Measures can be evaluated on the basis of multiple criteria; a discussion of the more important of these criteria is offered. Measures that prove viable are of special importance in three areas: the evaluation of students, communication among educators, and the investigation of hypotheses. Within the definition that is offered, measurement procedures may involve a variety of formats; these are briefly reviewed and evaluated.
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