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https://hdl.handle.net/2440/51242
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Type: | Journal article |
Title: | Inspection time predicts individual differences in everyday functioning among elderly adults: Testing discriminant validity |
Author: | Gregory, T. Callaghan, A. Nettelbeck, T. Wilson, C. |
Citation: | Australasian Journal on Ageing, 2009; 28(2):87-92 |
Publisher: | Blackwell Publishing Asia |
Issue Date: | 2009 |
ISSN: | 1440-6381 1741-6612 |
Statement of Responsibility: | Tess Gregory, Adelaide Callaghan, Ted Nettelbeck, Carlene Wilson |
Abstract: | <h4>Aim</h4>Inspection time (IT) is a processing speed measure, recently investigated as a biomarker of ageing. This study examined whether earlier IT predicts subsequent problems in everyday functioning in community-dwelling elderly people.<h4>Methods</h4>Participants completed IT at baseline, 6 months and 18 months. At 42 months, two groups of 15 elderly people matched for education and age (74-88 years) and selected for slower or faster baseline IT, completed a fourth estimate of IT and a practical assessment of everyday functioning (Timed Instrumental Activities of Daily Living - Adelaide).<h4>Results</h4>At 42 months, the group with slower baseline IT had significantly poorer performance (slower completion, higher errors) on more than half of the everyday functioning tasks.<h4>Conclusion</h4>Slower IT predicts difficulties up to 4 years later in everyday functioning of elderly adults, providing discriminant validation for IT as a biomarker for future changes. |
Keywords: | activity of daily living functional status speed of processing |
DOI: | 10.1111/j.1741-6612.2009.00366.x |
Published version: | http://dx.doi.org/10.1111/j.1741-6612.2009.00366.x |
Appears in Collections: | Aurora harvest 5 Psychology publications |
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