Question

What can be calculated by comparing the performance of those who have obtained very low test scores with those who have obtained very high test scores?

• A. Discrimination Index
• B. Difficulty Index
• C. Item Characteristic Curve
• D. Item Bias

Hint:

Good test items have positive discrimination indices, while negative values suggest problematic items.

Answer 1

The Correct Option is A

The discrimination index assesses how effectively a test item differentiates between high and low performers.

• A high discrimination index indicates that high performers answer the item correctly, while low performers answer it incorrectly.
• Its purpose is to evaluate the item's ability to distinguish between varying levels of ability.