Which one of the following is the preferred method for determining item bias?

1. AItem difficutly level
2. BItem discrimination index
3. CItem characteristic curve
4. DInter item correlation matrix

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: C. Item characteristic curve

Explanation

Item characteristic curves (IRT-based differential item functioning) are the preferred way to detect item bias.