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Explains observer and inter-observer reliability (IRR)

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What is observer and inter-observer reliability? What factors impact inter-observer reliability?

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Explains what observer and inter-observer (inter-rater) reliability are. The expert explains how to maximize inter-observer reliability.

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Observer reliability is important when we have an observer or rater rating different people on a given test. Think of it this way: imagine your professor is marking essays that you and your classmates wrote. Sometimes your professor doesn't read the essays very carefully and gives the student an A, even if it's a poor paper. Other times, the professor reads the papers very carefully and ...

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