Citation

Rees J, McKenna P, Bell V, Skucek E, Nichols E, Fisher P. Br. J. Clin. Psychol. 2008; 47(Pt 2): 139-151.

Affiliation

Gwent Healthcare NHS Trust, Ty Dafydd Unit, Ystrad Mynach Hospital, Gwent, UK. janice.rees@gwent.wales.nhs.uk

Copyright

(Copyright © 2008, British Psychological Society)

DOI

10.1348/014466507X236042

PMID

17723157

Abstract

OBJECTIVES: The current study aimed to obtain older adult normative data on a neuropsychological battery in relation to functions underlying driving ability. The effect of age on performance on the battery was previously unknown; normative data revision was necessary to enable more appropriate use of the battery with older clients. DESIGN: Cross-sectional cohort study. METHODS: Volunteers were sought from healthy older people living independently in the community to complete the Rookwood Driving Battery. A group of 202 volunteers above the age of 70 were recruited from local social groups to complete the battery. Of these, 184 completed a screening test of cognitive integrity (Mini Mental State Examination, MMSE). The age ranged from 70 to 96 (mean age=81 years, SD=5.438). In the total sample, 155 (77%) were females. RESULTS: Results of the MMSE indicated that 161 (87.5%) of the group fell above a cut-off (25/30) typically used in epidemiological studies to identify age-related cognitive decline. Of these cognitively intact volunteers, performance was marked by higher battery error scores (mean=5.12, SD=3.75) than those observed in an earlier normative study using younger volunteers below 70 years of age (mean=1.41, SD=1.87). The two age groups differed significantly on all 10 battery subtests; in all cases the level of significance was .002 or less; for nine subtests, significance fell below .001. In the 'intact' older group, battery performance was observed to be closely related to score on the MMSE, a test of general cognitive integrity (r=.558, p=.01). CONCLUSIONS: Performance on the Rookwood Battery differs for the over 70s and under 70s. The authors suggest essential modifications in its use with older people.

Language: en