Centre for Policy on Ageing



Aging and counting speed — evidence for process-specific slowing
Author(s)	Martin Sliwinski
Journal title	Psychology and Aging, vol 12, no 1, March 1997
Pages	pp 38-49
Keywords	Mental speed ; Mental ageing ; Age groups [elderly] ; Performance ; Correlation ; United States of America.
Annotation	The performance of adults ranging in age from 20 to 86 on two tasks requiring different types of counting operations was examined. Sub-proportional age effects for incrementing speed and enumeration speed (counting 5 to 8 objects) indicate that some types of counting processes are exempt from the slowing effects of ageing. Increased age was associated with a diminished frequency and slowing of subitizing (counting 4 or more items), as well as with slowing in the speed of initiating the incrementing process, but the course of age-related slowing for these measures is described by different functions. These results indicate that cognitive slowing is not equivalent for different types of processes involved in counting and numbering judgments.
Accession Number	CPA-971120236 A
Classmark	DG: D6: BB: 5H: 49: 7T
Data © Centre for Policy on Ageing

...from the Ageinfo database published by Centre for Policy on Ageing.