Item Analysis Chapter 10: Item Response Theory and Item Characteristic Curve

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What is the Item Characteristic Curve (ICC) used to graphically present?

The number of people who take the test

The types of people who take the test

The probability of choosing the correct answer as a function of the level of attribute measured by the test (correct)

The difficulty of the test items

What is emphasized by modern approaches to test development and analysis?

Statistics and analytic methods (correct)

Simple methods of item analysis

Traditional item analysis

The influence of people who take the test

Which feature of an item does the Item Characteristic Curve (ICC) summarize?

The number of people who choose the correct answer

Difficulty, discriminating power, and probability of answering correctly (correct)

The types of people who take the test

The level of attribute measured by the test

What does a very difficult item with little discriminating power indicate?

The item is not well-constructed Signup and view all the answers

According to the Item Characteristic Curve (ICC), what happens as verbal ability increases?

The probability of choosing the correct answer increases Signup and view all the answers

What does it mean when people who did well on a test are less likely to do well on a particular item?

The item has low discriminating power Signup and view all the answers

According to item response theory (IRT), what is the purpose of using item characteristic curves?

To describe the relationship between a person’s ability level and the likelihood of a correct answer Signup and view all the answers

In IRT, what does item discriminating power refer to?

The relationship between item responses and the construct measured by the test Signup and view all the answers

What is a disadvantage of using traditional item analysis, as compared to item response theory (IRT)?

It links item responses to total test scores rather than to the construct measured by the test Signup and view all the answers

In IRT, what does a difficult item refer to?

An item that requires a high level of ability to achieve a correct answer Signup and view all the answers

How does adaptive testing differ from traditional test construction?

It tailors the test to the individual examinee's ability level Signup and view all the answers

What can be achieved by constructing separate item characteristic curves for each possible response in a multiple-choice test?

Getting information about ability from distractors Signup and view all the answers

In IRT, how does item discriminating power differ from traditional approaches to item analysis?

It depends on the relationship between item responses and the construct measured by the test Signup and view all the answers

What is a potential application of adaptive testing?

Tailoring the test to the individual examinee's ability level Signup and view all the answers

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To determine if everyone answers correctly at higher ability levels Signup and view all the answers

What does adaptive testing allow for?

Estimating ability at each step of testing and then selecting next item accordingly Signup and view all the answers

What does screening tests aim at?

Separating out people with a given characteristic Signup and view all the answers

Item Analysis Chapter 10: Item Response Theory and Item Characteristic Curve

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