Journal of Speech, Language, and Hearing Research Vol.54 1089-1100 August 2011. doi:10.1044/1092-4388(2010/09-0119)
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Article

Development of a Short Form of the Boston Naming Test for Individuals With Aphasia

Christina M. del Toroa
Lauren P. Bislickb
Matthew Comera
Craig Velozoa,,c
Sergio Romeroa,,c
Leslie J. Gonzalez Rothia,,c
Diane L. Kendallb,,c,,d
a University of Florida, Gainesville
b University of Washington, Seattle
c Malcom Randall VA Medical Center, Gainesville, FL
d VA Medical Center Puget Sound, Seattle, WA

Correspondence to Christina M. del Toro: cdeltoro{at}uw.edu

Purpose: The purpose of this study was to develop a short form of the Boston Naming Test (BNT; Kaplan, Goodglass, & Weintraub, 2001) for individuals with aphasia and compare it with 2 existing short forms originally analyzed with responses from people with dementia and neurologically healthy adults.

Method: Development of the new BNT–Aphasia Short Form and analysis of the other 2 forms were completed with archival data from 100 individuals with aphasia. The authors developed the BNT–Aphasia Short Form using items from the original 60-item instrument based on item response theory. Rasch analysis was computed on the short forms developed by Graves, Bezeau, Fogarty, and Blair (2004) and by Mack, Freed, Williams, and Henderson (1992).

Results: Analysis of the Graves et al. (2004) short form resulted in the smallest range of item difficulty and the largest floor effect compared with the Mack et al. (1992) short form and the BNT–Aphasia short form. The BNT–Aphasia Short Form showed an increase in information in the middle of the scale relative to both the Graves et al. and the Mack et al. forms.

Conclusions: The new short form demonstrates good psychometric properties when used with individuals with aphasia. However, the Mack et al. form proved to be as psychometrically sound as the BNT–Aphasia Short Form and is also appropriate for individuals with aphasia.

KEY WORDS: Boston Naming Test, Aphasia, Anomia, Rasch, IRT


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