Estimating verbal fluency and naming ability from the test of premorbid functioning and demographic variables: Regression equations derived from a regional UK sample

Estimating verbal fluency and naming ability from the test of premorbid functioning and demographic variables: Regression equations derived from a regional UK sample

Objectives Neuropsychological assessment requires accurate estimation of an individual's premorbid cognitive abilities. Oral word reading tests, such as the test of premorbid functioning (TOPF), and demographic variables, such as age, sex, and level of education, provide a reasonable indication...

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Bibliographic Details
Published in:British journal of clinical psychology Vol. 57; no. 2; pp. 135 - 147
Main Authors: Jenkinson, Toni‐Marie, Muncer, Steven, Wheeler, Miranda, Brechin, Don, Evans, Stephen
Format: Journal Article
Language:English
Published: England Wiley Subscription Services, Inc 01-06-2018
Subjects:
Ability tests
Cognitive ability
Cognitive ability tests
Fluency
Intelligence
meningioma
Naming
Neurological disorders
Neuropsychological assessment
neuropsychology
Premorbid
Reading tests
Regional variations
regressions
TBI
test of premorbid functioning
Test scores
Variables
meningioma
neuropsychology
TBI
regressions
test of premorbid functioning
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Summary:Objectives Neuropsychological assessment requires accurate estimation of an individual's premorbid cognitive abilities. Oral word reading tests, such as the test of premorbid functioning (TOPF), and demographic variables, such as age, sex, and level of education, provide a reasonable indication of premorbid intelligence, but their ability to predict other related cognitive abilities is less well understood. This study aimed to develop regression equations, based on the TOPF and demographic variables, to predict scores on tests of verbal fluency and naming ability. Methods A sample of 119 healthy adults provided demographic information and were tested using the TOPF, FAS, animal naming test (ANT), and graded naming test (GNT). Multiple regression analyses, using the TOPF and demographics as predictor variables, were used to estimate verbal fluency and naming ability test scores. Change scores and cases of significant impairment were calculated for two clinical samples with diagnosed neurological conditions (TBI and meningioma) using the method in Knight, McMahon, Green, and Skeaff (). Results Demographic variables provided a significant contribution to the prediction of all verbal fluency and naming ability test scores; however, adding TOPF score to the equation considerably improved prediction beyond that afforded by demographic variables alone. The percentage of variance accounted for by demographic variables and/or TOPF score varied from 19 per cent (FAS), 28 per cent (ANT), and 41 per cent (GNT). Change scores revealed significant differences in performance in the clinical groups, particularity the TBI group. Conclusions Demographic variables, particularly education level, and scores on the TOPF should be taken into consideration when interpreting performance on tests of verbal fluency and naming ability
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ISSN:0144-6657
2044-8260
DOI:10.1111/bjc.12166