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Setting Discontinue Rules for Progressive Tests: A Practical and Transparent Toolkit.

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Progressive tests use discontinue rules to balance participant burden and testing efficiency. Optimal rules depend on the specific test

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Area of Science:

  • Psychometrics
  • Educational Measurement
  • Test Theory

Background:

  • Progressive tests administer items by increasing difficulty, using discontinue rules to manage participant burden and resource use.
  • Current discontinue rules lack a systematic, evidence-based framework for optimization.

Purpose of the Study:

  • To propose a transparent approach for evaluating the impact of different discontinue rules on test accuracy and efficiency.
  • To facilitate informed decision-making for setting appropriate discontinue rules in progressive testing.

Main Methods:

  • Developed 'A-E charts' to visualize the trade-offs between accuracy and efficiency for various discontinue rules.
  • Applied discontinue rules retroactively to normative item response data to generate A-E charts.

Main Results:

  • Demonstrated that a universal discontinue rule is unlikely to be optimal across all testing scenarios.
  • Showcased that the optimal discontinue rule is contingent upon the desired efficiency-accuracy balance and specific test context.

Conclusions:

  • The proposed A-E charting approach offers a pragmatic method for practitioners and test developers to evaluate and select discontinue rules.
  • Encourages a systematic re-evaluation of existing discontinue rules to enhance test efficiency and maintain accuracy.