Let’s say that you created an evaluation instrument in computing education research, and you gave it to the same group of high school students four times at (nearly) the same time. Instruments with evidence of reliability yield the same results each time they are administered. But how do you know if these evaluation instruments actually measure what they say they are measuring? We gain confidence in these instruments by assessing evidence of their reliability and validity. So, what do these measures mean? And, what is the difference between them?Įvaluation instruments are often designed to measure the impact of outreach activities, curriculum, and other interventions in computing education. In the Filters section on the Evaluation Instruments page, you can find a category called Assessed where you can include instruments in your search that have been previously shown to have evidence of reliability and validity. How do you know if your evaluation instrument is “good”? Or if the instrument you find on is a decent one to use in your study?Įvaluation instruments (like surveys, questionnaires, and interview protocols) can go through their own evaluation to assess whether or not they have evidence of reliability or validity.
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