# Solved >     1. Rasch modeling and item response:1686208 …

1. Rasch modeling and item response theory (IRT) are related methods of estimating the reliability of test items and the performance of test takers. True or False?

2. Item response theory (IRT) can be seen as a logical extension of classical test theory (CTT), which updates the classical approach by incorporating more advanced statistical techniques. True or False?

3. The main focus of both IRT and CTT is to enhance the valid use of test scores by educational professionals. True or False?

4. The difficulty index is a measure of the odds that an individual will get an item right. True or False?

5. The discrimination index is a correlation between individuals’ scores on a question and their scores on the whole test. True or False?

6. A negative discrimination index for an item could mean that the students who did poorly on the test tended to do well on that item. True or False?

7. An examination with many items testing students’ mastery is likely to have a low difficulty index and a high discrimination index. True or False.

8. Logits are used in IRT and Rasch modeling to transform odds into interval-level values that conform to the statistical assumptions required for the proper use of correlation and regression. True or False?

9 IRT uses regression in which he dependent variable is the logit of answering a question correctly; the independent variables are the question’s difficulty indexes and the estimated knowledge level of the test taker. True or False?

10. IRT is used to equate the difficulty levels of tests so that scores can be compared across tests.

True or False?

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