Multiple true-false (MTF) items are a widely used supplement to the commonly used single-best answer (Type A) multiple choice format. However, an optimal scoring algorithm for MTF items has not yet been established, as existing studies yielded conflicting results. Therefore, this study analyzes two questions: What is the optimal scoring algorithm…

On distractor-identification tests students mark as many distractors as possible on each test item. A grading scale is developed for this type testing. The score is optimal in that it yields an unbiased estimate of the student's score as if no guessing had occurred. (Author/JKS)

The author surveys literature and practice, primarily in Great Britain and the United States, about multiple-choice testing, comments on criticisms, and defends the state of the art. Varous item types, item writing, test instructions and scoring formulas, item analysis, and test construction are discussed. An extensive bibliography is appended.…