Premium
An examination of the Boston Naming Test: calculation of “estimated” 60‐item score from 30‐ and 15‐item scores in a cognitively impaired population
Author(s) -
Hobson Valerie L.,
Hall James R.,
Harvey Michelle,
Cullum C. Munro,
Lacritz Laura,
Massman Paul J.,
Waring Stephen C.,
O'Bryant Sid E.
Publication year - 2011
Publication title -
international journal of geriatric psychiatry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 129
eISSN - 1099-1166
pISSN - 0885-6230
DOI - 10.1002/gps.2533
Subject(s) - boston naming test , test (biology) , psychology , item response theory , psychometrics , test score , short forms , population , sample (material) , gerontology , clinical psychology , standardized test , medicine , cognition , psychiatry , paleontology , chemistry , mathematics education , environmental health , chromatography , neuropsychology , biology
Objective Multiple versions of the Boston Naming Test (BNT) exist, which makes comparison of findings from different studies difficult. The current project sought to determine if estimated 60‐item BNT scores could be reliably calculated from 30‐ and 15‐item administrations with patients diagnosed with Alzheimer's disease (AD). Methods Estimated 60‐item scores were created for 30‐item (even and odd) and 15‐item Consortium to Establish a Registry for Alzheimer's disease (CERAD) versions of the BNT from a database containing item‐level responses for all BNT items. Correlations were conducted between all three estimated 60‐item scores and full 60‐item version scores administered to all participants in the sample. Results The estimated versions were all highly correlated with the standard 60‐item version of the BNT across the sample and these findings held when the sample was separated out by case (AD) and control status. Mean difference scores were very small for scores estimated from 30‐item administrations; however, difference scores for the 15‐item CERAD were much larger. Conclusions Estimated 60‐item versions of the BNT can be created from 30‐item BNT administrations, which will enable comparisons across studies and allow integration of data from various AD research groups for increased power in analytic protocols. Creation of an estimated score from the 15‐item CERAD version is not warranted. Copyright © 2010 John Wiley & Sons, Ltd.