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 measures how effectively a test item distinguishes between high- and low-performing individuals.

• High discrimination index: Indicates that the item is answered correctly by high performers and incorrectly by low performers.
• Purpose: Evaluates the item's ability to differentiate between varying levels of ability.