A good test is one that successfully identifies a range of relevant competencies when: - The takers are not placed under time pressure - The takers have access to any resources they'd like to use that are generally available to them in life
You're still thinking in terms of *the current test standard* — questions that have one correct answer, and where nuances in ability beyond what's required to answer it have to be inferred from factors like speed.
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If you're under time pressure, your options for "best" are necessarily limited to those that can safely fit the time budget. In most real-world engineering contexts, working this way is costly in the long run. Why deviate from the demands of the actual work?
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With regard to certification, this sounds very circular — e.g., "you need standard testing to succeed at standard tests." The question is whether knowledge regurgitation tests are ever the optimal way to determine whether someone is competent, not able to obtain certification.
End of conversation
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