Test Your Knowledge of Test Equivalence
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Test Your Knowledge of Test Equivalence

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@HallowedHeliotrope

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Questions and Answers

Which reliability model assumes unequal true score variance, unequal means, and unequal error variances?

  • Tau-Equivalent
  • Congeneric (correct)
  • Parallel
  • Essentially Tau-Equivalent

    • Which reliability model assumes equal true score variance, equal means, and unequal error variances?

  • Essentially Tau-Equivalent
  • Congeneric
  • Parallel
  • Tau-Equivalent (correct)

    • Which model is considered the most strict and only exists in theory?

  • Tau-Equivalent
  • Essentially Tau-Equivalent
  • Parallel (correct)
  • Congeneric

    • Which reliability model assumes equal true score variance, equal means, and equal error variances?

    <p>Parallel</p> Signup and view all the answers

    Which reliability model assumes equal true score variance, unequal means, and unequal error variances?

    <p>Essentially Tau-Equivalent</p> Signup and view all the answers

    Which model is considered the least strict?

    <p>Congeneric</p> Signup and view all the answers

    What reliability model do we assume Cronbach's alpha?

    <p>Essentially Tau-Equivalent</p> Signup and view all the answers

    In practice, data obtained in the “real world” will only satisfy:

    <p>Congeneric and Essential Tau-Equivalent models</p> Signup and view all the answers

    What does the mean inter-item correlation measure in relation to internal consistency reliability?

    <p>If individual questions on a test or questionnaire give consistent, appropriate results</p> Signup and view all the answers

    At approximately how many items does the increase in Cronbach's alpha become more gradual and potentially less beneficial?

    <p>Around 15 items</p> Signup and view all the answers

    What pattern is observed when examining the relationship between the mean inter-item correlation and Cronbach's alpha?

    <p>Cronbach's alpha rises rapidly up from 2 to 8 items, and then increases more gradually.</p> Signup and view all the answers

    Why might a more homogenous sample yield lower reliability estimates than a heterogeneous sample?

    <p>Greater homogeneity implies less variance, resulting in smaller inter-item correlations.</p> Signup and view all the answers

    What type of research examines the degree to which test score reliability from a particular measure is consistent across samples?

    <p>Reliability generalization study</p> Signup and view all the answers

    What is a reliability generalization study?

    <p>A study that examines the degree to which test score reliability from a particular measure is consistent across samples.</p> Signup and view all the answers

    Why is it inappropriate to say that a test is reliable?

    <p>Because reliability is a property of tests, not test scores, and it is sample dependent</p> Signup and view all the answers

    Which sample size is required for respectable confidence when the reliability is 0.70?

    <p>400</p> Signup and view all the answers

    Which sample size is required for respectable confidence when the reliability is 0.90?

    <p>100</p> Signup and view all the answers

    What is the relationship between sample size and confidence intervals associated with Cronbach's alpha?

    <p>The larger the sample size, the greater the confidence.</p> Signup and view all the answers

    Which coefficient is a more modern approach to estimating internal consistency reliability?

    <p>Coefficient omega</p> Signup and view all the answers

    What is the key difference between coefficient alpha and coefficient omega?

    <p>Coefficient alpha assumes essential tau-equivalence, while coefficient omega does not</p> Signup and view all the answers

    Which coefficient is a better estimate of internal consistency reliability?

    <p>Coefficient omega</p> Signup and view all the answers

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