Standardization is a term that is used in variety of ways in research design. The three most common uses of the term relate to standardization of procedure, standardization of interpretation, and standardization of scores.
Standardization of procedure is highly important in any kind of research design and essentially refers to experimental control. This is relevant for any test or experimental procedure and includes the standardization of instructions, administration (including manipulation), and measurement of variables of theoretical interest. Instructions need to be as clear as possible for the particular population. The presentation order of test material or experimental manipulations needs to be identical between people, trials, or conditions. Time constraints might be specified. In many test designs, instructions might also include ways of handling questions ...
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