After the psychologist has made decisions about the format of the test and the response options, as well as established an initial group of test times, the next stage involves refining the measure by making selections of the best items for inclusion in the final scale version(Schinka at al., 2003). This essay will discuss critical steps and guidelines to follow in this stage. Specifically, the author shall point out the aspects of the stage and the items that the researcher must include during the development of a test.
At the item evaluation stage, there is no defined way of identifying the professed best items on the scale. During the selection process, it is crucial to bear in mind that there is no single qualitative item parameter that the researcher is supposed to use as an independent and definite criterion of item selection. A researcher’s overreliance on one particular parameter predictably leads to many undesirable psychometric properties and only one desirable one(Schinka at al., 2003).By recognizing this, the application of the construct validation approach prevents numerous downsides related to naïve empiricism in the process of test construction.
On the whole, the researcher‘s aim is to feature items with a conspicuous balance between various item parameters of interest. These include the empirical attributes as well as the content coverage. It ensures that the resulting scale is useful in different applications. Since the construct validation approach stresses theoreticaland observational systems of test development, methodologies for choosing things ought to incorporate both calculated and measurable examinations(Schinka at al., 2003). It is critical that these assessment procedures be applied instantaneouslyin picking items.
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