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This essay describes Rasch analysis psychometric techniques and how such techniques can be used by life sciences education researchers to guide the development and use of surveys and tests.
Specifically, Rasch techniques can be used to document and evaluate the measurement functioning of such instruments. Rasch techniques provide a mechanism by which the quality of life sciences—related tests and surveys can be optimized and the techniques can be used to provide a context e.
Rasch analysis allows researchers to construct alternative forms of measurement instruments, which opens the door to altering an instrument in light of student growth and change. Rasch analysis also helps researchers think in more sophisticated ways with respect to the constructs variables they wish to measure.
Some life sciences education researchers are already using Rasch techniques e. The purpose of this article is to provide a brief introduction to selected whys, whens, and hows of using Rasch techniques so that Rasch techniques become more widely used in the life sciences education research community.