Measure - you get a measurement of 2 1/2 feet. Say you have a piece of wood that is 2 1/2 feet long. Think about measurement processes in other contexts - in construction or woodworking, a tape measure is a highly reliable measuring instrument. Reliability is concerned with questions of stability and consistency - does the same measurement tool yield stable and consistent results when repeated over time. These two concepts are validity and reliability. ![]() Whether the same measurement process yields the same results.Whether we are measuring what we intend to measure.Two of the primary criteria of evaluation in any measurement or observation are: Although the guiding principle should be the specific purposes of the research, there are better and worse questions for any particular operationalization. ![]() For every dimension of interest and specific question or set of questions, there are a vast number of ways to make questions.
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