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Utilizing Response Time Distributions for Item Selection in CAT

Author

Listed:
  • Zhewen Fan

    (Precision Therapeutics, Inc.)

  • Chun Wang

    (University of Illinois Urbana-Champaign)

  • Hua-Hua Chang

    (University of Illinois Urbana-Champaign)

  • Jeffrey Douglas

    (University of Illinois Urbana-Champaign)

Abstract

Traditional methods for item selection in computerized adaptive testing only focus on item information without taking into consideration the time required to answer an item. As a result, some examinees may receive a set of items that take a very long time to finish, and information is not accrued as efficiently as possible. The authors propose two item-selection criteria that utilize information from a lognormal model for response times. The first modifies the maximum information criterion to maximize information per time unit. The second is an inverse time-weighted version of a-stratification that takes advantage of the response time model, but achieves more balanced item exposure than the information-based techniques. Simulations are conducted to compare these procedures against their counterparts that ignore response times, and efficiency of estimation, time-required, and item exposure rates are assessed.

Suggested Citation

  • Zhewen Fan & Chun Wang & Hua-Hua Chang & Jeffrey Douglas, 2012. "Utilizing Response Time Distributions for Item Selection in CAT," Journal of Educational and Behavioral Statistics, , vol. 37(5), pages 655-670, October.
    • Handle: RePEc:sae:jedbes:v:37:y:2012:i:5:p:655-670
    DOI: 10.3102/1076998611422912
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    References listed on IDEAS

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    1. Eric Maris, 1993. "Additive and multiplicative models for gamma distributed random variables, and their application as psychometric models for response times," Psychometrika, Springer;The Psychometric Society, vol. 58(3), pages 445-469, September.
    2. Joris Mulder & Wim Linden, 2009. "Multidimensional Adaptive Testing with Optimal Design Criteria for Item Selection," Psychometrika, Springer;The Psychometric Society, vol. 74(2), pages 273-296, June.
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    5. Daniel Segall, 2001. "General ability measurement: An application of multidimensional item response theory," Psychometrika, Springer;The Psychometric Society, vol. 66(1), pages 79-97, March.
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    Cited by:

    1. Chun Wang & Gongjun Xu & Zhuoran Shang, 2018. "A Two-Stage Approach to Differentiating Normal and Aberrant Behavior in Computer Based Testing," Psychometrika, Springer;The Psychometric Society, vol. 83(1), pages 223-254, March.

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