On an item characteristic curve,the steeper the curve,
A) the more latent the trait is presumed to be.
B) the greater the item reliability.
C) the less the item discrimination.
D) the greater the item discrimination.

Question

Quizplus · Accepted Answer

The steeper the curve, the greater the item discrimination. Item discrimination is the ability of an item to differentiate between individuals who have high levels of the trait being measured and those who have low levels of the trait being measured. Thus, a steeper curve indicates that the item is better at discriminating between individuals with high and low levels of the trait, and therefore has greater item discrimination.

On an Item Characteristic Curve,the Steeper the Curve