chosen so that a student would simply need to remember that the gravitational force diminishes quickly or
drastically to get the correct answer, but this proved to be too vague. In Version 2, distractor choices overly
emphasized the factor of two. Interviews indicated that students did not consider the correct choice, “d. None of
the above is correct,” when presented with such effective distractors, making the question overly difficult and a
poor discriminator. Additionally, one can see from Table 6 that choices that did not represent “weaker” were not
effective distractors.
chosen so that a student would simply need to remember that the gravitational force diminishes quickly ordrastically to get the correct answer, but this proved to be too vague. In Version 2, distractor choices overlyemphasized the factor of two. Interviews indicated that students did not consider the correct choice, “d. None ofthe above is correct,” when presented with such effective distractors, making the question overly difficult and apoor discriminator. Additionally, one can see from Table 6 that choices that did not represent “weaker” were noteffective distractors.
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