Discrimination in testing refers to?

Discrimination in testing refers to?

• A. Degree to which a test distinguishes differences between learners
• B. The reliability of the test
• C. The number of questions
• D. The time allowed to complete the test

Answer: (A)

Discrimination in testing is about how well a test item separates learners who have mastered the material from those who have not. A good discriminating item yields higher scores from higher-achieving students and lower scores from lower-achieving ones, creating a clear difference between the top and bottom groups. This is what lets the test distinguish different levels of ability rather than giving similar results to everyone. Reliability is about consistency of results, not how well items differentiate ability. The number of questions and the time allowed affect test length and pacing, not the item’s ability to discriminate between learners.

Discrimination in testing is about how well a test item separates learners who have mastered the material from those who have not. A good discriminating item yields higher scores from higher-achieving students and lower scores from lower-achieving ones, creating a clear difference between the top and bottom groups. This is what lets the test distinguish different levels of ability rather than giving similar results to everyone.

Reliability is about consistency of results, not how well items differentiate ability. The number of questions and the time allowed affect test length and pacing, not the item’s ability to discriminate between learners.