Development and Simulation Testing of a Computerized Adaptive Version of the Philadelphia Naming Test Purpose The purpose of this study was to develop a computerized adaptive test (CAT) version of the Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996), to reduce test length while maximizing measurement precision. This article is a direct extension of a companion article (Fergadiotis, Kellough, & Hula, ... Research Article
Research Article  |   June 01, 2015
Development and Simulation Testing of a Computerized Adaptive Version of the Philadelphia Naming Test
 
Author Affiliations & Notes
  • William D. Hula
    Geriatric Research, Education, and Clinical Center, VA Pittsburgh Healthcare System, PA
    University of Pittsburgh, PA
  • Stacey Kellough
    Geriatric Research, Education, and Clinical Center, VA Pittsburgh Healthcare System, PA
  • Gerasimos Fergadiotis
    Portland State University, OR
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication.×
  • Correspondence to William D. Hula: william.hula@va.gov
  • Editor: Rhea Paul
    Editor: Rhea Paul×
  • Associate Editor: Margaret Blake
    Associate Editor: Margaret Blake×
  • This article is a companion to Fergadiotis et al., “Item Response Theory Modeling of the Philadelphia Naming Test,” JSLHR, doi:10.1044/2015_JSLHR-L-14-0249
    This article is a companion to Fergadiotis et al., “Item Response Theory Modeling of the Philadelphia Naming Test,” JSLHR, doi:10.1044/2015_JSLHR-L-14-0249×
Article Information
Research Issues, Methods & Evidence-Based Practice / Language Disorders / Aphasia / Language / Research Articles
Research Article   |   June 01, 2015
Development and Simulation Testing of a Computerized Adaptive Version of the Philadelphia Naming Test
Journal of Speech, Language, and Hearing Research, June 2015, Vol. 58, 878-890. doi:10.1044/2015_JSLHR-L-14-0297
History: Received October 22, 2014 , Revised January 26, 2015 , Accepted February 26, 2015
 
Journal of Speech, Language, and Hearing Research, June 2015, Vol. 58, 878-890. doi:10.1044/2015_JSLHR-L-14-0297
History: Received October 22, 2014; Revised January 26, 2015; Accepted February 26, 2015
Web of Science® Times Cited: 1

Purpose The purpose of this study was to develop a computerized adaptive test (CAT) version of the Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996), to reduce test length while maximizing measurement precision. This article is a direct extension of a companion article (Fergadiotis, Kellough, & Hula, 2015), in which we fitted the PNT to a 1-parameter logistic item-response-theory model and examined the validity and precision of the resulting item parameter and ability score estimates.

Method Using archival data collected from participants with aphasia, we simulated two PNT-CAT versions and two previously published static PNT short forms, and compared the resulting ability score estimates to estimates obtained from the full 175-item PNT. We used a jackknife procedure to maintain independence of the samples used for item estimation and CAT simulation.

Results The PNT-CAT recovered full PNT scores with equal or better accuracy than the static short forms. Measurement precision was also greater for the PNT-CAT than the static short forms, though comparison of adaptive and static nonoverlapping alternate forms showed minimal differences between the two approaches.

Conclusion These results suggest that CAT assessment of naming in aphasia has the potential to reduce test burden while maximizing the accuracy and precision of score estimates.

Acknowledgments
This research was supported by VA Rehabilitation Research & Development Career Development Award C7476W, and the VA Pittsburgh Healthcare System Geriatric Research Education and Clinical Center. The contents of this paper do not represent the views of the Department of Veterans Affairs or the United States Government.
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