Introduction to Item Response Theory (IRT)
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Questions and Answers

What are two key approaches used to evaluate the overall test or form in Item Response Theory?

  • Item difficulty and item discrimination
  • Maximum likelihood estimation and Bayesian methods
  • Conditional standard error of measurement and test information function (correct)
  • Computerized adaptive tests and linear on the fly testing

    • If the test information function is higher, what does it indicate about the test?

  • Developing computerized adaptive tests
  • Scoring examinees with Bayesian methods
  • Having poorly calibrated items
  • Providing more measurement information about examinees (correct)

    • What does a relatively low test information function in a range of examinee ability imply?

  • Examinees in that range have high scores
  • The exam is well-balanced
  • The exam has a high level of security
  • Those examinees in that range are not being measured accurately (correct)

    • How is the conditional standard error of measurement related to the test information function?

    <p>It is the inverse of the TIF</p> Signup and view all the answers

    What is a 95% confidence interval for a person's score calculated using the standard error of measurement?

    <p>$\pm 1.96$ times the SEM</p> Signup and view all the answers

    In what context would data forensics using Item Response Theory be valuable?

    <p>To find cheaters or issues with examinee responses</p> Signup and view all the answers

    What is the main focus of Item Response Theory (IRT)?

    <p>Modeling responses to test items</p> Signup and view all the answers

    Which of the following is a technique associated with Item Response Theory (IRT)?

    <p>Differential item functioning</p> Signup and view all the answers

    When was the theoretical and computational framework of Item Response Theory (IRT) developed?

    <p>From the 1950s through the 1980s</p> Signup and view all the answers

    What does Item Response Theory (IRT) provide a well-founded framework for?

    <p>Educational measurement</p> Signup and view all the answers

    Which of the following is NOT an activity supported by Item Response Theory (IRT)?

    <p>Forecasting stock market trends</p> Signup and view all the answers

    What are the two primary approaches in analyzing test data within psychometric theory?

    <p>Classical Test Theory (CTT) and Item Response Theory (IRT)</p> Signup and view all the answers

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