Briefly explain the basis of item response theory. How does it differ from classical test theory? What are some of the benefits and challenges to each of these theories? Are there times when one would be more appropriate to employ than the other? What are item characteristic curves, and what information can they provide?

Question

Briefly explain the basis of item response theory.  How does it differ from classical test theory?  What are some of the benefits and challenges to each of these theories?  Are there times when one would be more appropriate to employ than the other?  What are item characteristic curves, and what information can they provide?

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The Answer of Briefly explain the basis of item response theory.  How does it differ from classical test theory?  What are some of the benefits and challenges to each of these theories?  Are there times when one would be more appropriate to employ than the other?  What are item characteristic curves, and what information can they provide?

Briefly Explain the Basis of Item Response Theory