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Interpreting high scores on the NIH Toolbox Cognition Battery: Potential utility for detecting cognitive decline in high-functioning individuals.

Abstract：

OBJECTIVE:It is well established that it is common for healthy adults to obtain one or more low scores when multiple neuropsychological tests are administered; however, very little is known about the normal frequency of high scores. The current study reports high-score base rates for the National Institutes of Health Toolbox for the Assessment of Neurological and Behavioral Function Cognition Battery (NIHTB-CB) normative sample. We hypothesized that high scores would be common and increase in frequency with greater education and crystallized ability. METHOD:Participants (ages 20-85) completed the NIHTB-CB (2 crystallized tests and 5 fluid tests). Multivariate base rates of high age-corrected and demographic-corrected scores for the fluid tests (i.e., ≥ 50th, 63rd, 75th, 84th, 91st, 95th, 98th percentiles) were calculated with stratifications by education and crystallized ability. RESULTS:High scores occurred commonly on the NIHTB-CB, with 48.9% of participants obtaining 1+ age-corrected scores at or above the 84th percentile. High scores increased in frequency with greater education: 27.5% with 12 years of education had 1+ scores at or above the 91st percentile, whereas 40.7% with 16 or more years of education had 1+ scores at or above the 91st percentile. High scores also increased in frequency with higher crystallized ability: 51.4% of participants with low ability had 1+ demographic-corrected scores at or above the 75th percentile, whereas 81.8% of participants with superior ability had 1+ demographic-corrected scores at or above the 75th percentile. CONCLUSION:High scores occurred commonly among the NIHTB-CB normative sample and increased in frequency with greater education and crystallized ability. These base rates could inform the neuropsychological assessment of high-functioning individuals, in whom the absence of high scores, as opposed to the presence of low scores, may indicate a decline in cognitive functioning. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

journal_name

Neuropsychology

journal_title

Neuropsychology

authors

Karr JE,Iverson GL

doi

10.1037/neu0000691

subject

Has Abstract

pub_date

2020-07-30 00:00:00

eissn

0894-4105

issn

1931-1559

pii

2020-55291-001

pub_type

杂志文章

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Interpreting high scores on the NIH Toolbox Cognition Battery: Potential utility for detecting cognitive decline in high-functioning individuals.