Construct irrelevant

Construct irrelevance is the extent to which test scores are influenced by factors (e.g., mode of presentation or response) that are irrelevant (not related) to the construct that the test is intended to measure.

Source: "Adapted from: American Educational Research Association, American Psychological Association, & National Council on Measurement in Education. (1999). Standards for educational and psychological testing. Washington, DC: American Educational Research Association, p. 173."

Contextual Use: For Elisa, a student with severe cognitive disabilities, changing the font size and increasing sizing of images helped her to see the assessment item for counting objects and doing so was construct irrelevant (undesirable difficulty) to assessing ability to count.

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