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Fig. 6 | International Journal of STEM Education

Fig. 6

From: Multiple-true-false questions reveal more thoroughly the complexity of student thinking than multiple-choice questions: a Bayesian item response model comparison

Fig. 6

How predicted responses relate to inferred mastery with different distractor characteristics. Blue and orange lines represent predicted correct/fully correct responses at the given inferred mastery level for multiple-choice (MC) and multiple-true-false (MTF) questions, respectively. Solid lines represent mean parameters from observed data, dashed lines represent the practical limit where all distractors are as attractive as the most attractive distractor, and dotted lines represent the theoretical limit where all distractors are as attractive as the correct answer. The one-to-one line is shown in solid gray

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