Which Is True Regarding the Item Characteristic Curve, or "S

question 36

Multiple Choice

Which is true regarding the item characteristic curve, or "S" curve, in Item Response Theory (IRT) ?

• A) It assumes that as people's abilities increase, their probability of answering the item correctly decreases.
• B) A tall "S" means that an item has difficulty discriminating across ability.
• C) IRT and the S curve assist in writing items to target specific ranges of ability.
• D) It is useful in predicting the Standard Error of the Estimate.

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Definitions:

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