Classical test and Item response theories

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Question 1 of 9

1. Question

Briefly describe the basic premise of Classical Test Theory

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Question 2 of 9

2. Question

Which of the following is correct according to Classical Test Theory? (tick all that apply)

Error = difference between observed and true scores
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Observed score = true score + error
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True score = the individual's score on a measure if there was no error
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Question 3 of 9

3. Question

Which of the following best describes an important difference between Classical test theory (CTT) and Item response theory (IRT)?

CTT looks at a test as a whole, whereas IRT looks at individual items
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The calculations of CTT are more complex than IRT and must be done with a computer, whereas IRT can be done by hand
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IRT looks at a test as a whole whereas CTT looks at individual items
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CTT allows those who design tests to do things like create a test bank while IRT does not
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Question 4 of 9

4. Question

John works on designing questions and measures for the Law School Admissions Test (LSAT). He creates banks of questions which can be used to assess applicants’ knowledge of the law. Which of the following approaches is John using?

True score approach
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Psychometric testing
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Item response theory
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Classical testing theory
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Question 5 of 9

5. Question

An item characteristic curve (select one option)

Is where a true score predicts the level of the latent variable and the observed score
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Is a plot of the probability that a test item is answered correctly against the examinee's underlying ability on the trait being measured.
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Specifies a relationship between observable examinee test performance and the unobservable traits or abilities assumed to underlie performance on the test
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Question 6 of 9

6. Question

In Item Response Theory – what is the Test information Function?

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Question 7 of 9

7. Question

How is the test information function useful in psychometric testing?

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Question 8 of 9

8. Question

What is computer adaptive testing?

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Question 9 of 9

9. Question

Which of the following is true for computer adaptive testing? (tick all that apply)

Every test-takers questions will be different and dependent on their ability therefore pure standardisation is lost
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Can be more stressful for the test taker when they notice an easier question
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In computer adaptive testing every test takers experience is the same
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Classical test and Item response theories

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