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|Title:||Inspection time predicts individual differences in everyday functioning among elderly adults: Testing discriminant validity|
|Citation:||Australasian Journal on Ageing, 2009; 28(2):87-92|
|Publisher:||Blackwell Publishing Asia|
|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|
|Appears in Collections:||Psychology publications|
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