International Justice Solutions

Distractor Analysis enhances the effectiveness of multiple-choice tests by evaluating the performance of each distractor (incorrect answer options). Effective distractors should attract students who do not know the material well, thereby providing insights into specific misconceptions and gaps in knowledge. This analysis helps in refining questions to ensure they are challenging and discriminative, enhancing the overall quality of assessment tools.

Difficulty Analysis plays a critical role by determining the proportion of test-takers who answer each item correctly. This metric helps identify questions that are too easy or too difficult, allowing educators and test designers to calibrate questions to an appropriate difficulty level. Balancing the difficulty of test items ensures a test can accurately differentiate between varying levels of test-taker ability and knowledge depth.

Point Biserial Analysis is used to measure the strength and direction of the association between correctly answering a specific question and the overall test score. A high point biserial correlation indicates that those who score well on the test tend to answer the question correctly, signifying that the question is a good discriminator between higher and lower knowledge levels. Conversely, a low or negative point biserial correlation might suggest that the question is not aligned well with the overall test content or is potentially misleading.