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Reliability Theory for Measurements with Variable Test Length, Illustrated with ERN and Pe Collected in the Flanker Task

Author

Listed:
  • Jules L. Ellis

    (Open University of the Netherlands)

  • Klaas Sijtsma

    (Tilburg University)

  • Kristel Groot

    (Erasmus University Rotterdam)

  • Patrick J. F. Groenen

    (Erasmus University Rotterdam)

Abstract

In psychophysiology, an interesting question is how to estimate the reliability of event-related potentials collected by means of the Eriksen Flanker Task or similar tests. A special problem presents itself if the data represent neurological reactions that are associated with some responses (in case of the Flanker Task, responding incorrectly on a trial) but not others (like when providing a correct response), inherently resulting in unequal numbers of observations per subject. The general trend in reliability research here is to use generalizability theory and Bayesian estimation. We show that a new approach based on classical test theory and frequentist estimation can do the job as well and in a simpler way, and even provides additional insight to matters that were unsolved in the generalizability method approach. One of our contributions is the definition of a single, overall reliability coefficient for an entire group of subjects with unequal numbers of observations. Both methods have slightly different objectives. We argue in favor of the classical approach but without rejecting the generalizability approach.

Suggested Citation

  • Jules L. Ellis & Klaas Sijtsma & Kristel Groot & Patrick J. F. Groenen, 2024. "Reliability Theory for Measurements with Variable Test Length, Illustrated with ERN and Pe Collected in the Flanker Task," Psychometrika, Springer;The Psychometric Society, vol. 89(4), pages 1280-1303, December.
    • Handle: RePEc:spr:psycho:v:89:y:2024:i:4:d:10.1007_s11336-024-09982-5
    DOI: 10.1007/s11336-024-09982-5
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    References listed on IDEAS

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    Full references (including those not matched with items on IDEAS)

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