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Centre for Policy on Ageing | |
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| Visual search tasks: slowing of strategic and nonstrategic processes in the nonlexical domain | | Author(s) | Michael F Gorman, Donald L Fisher |
| Journal title | The Journals of Gerontology Series B: Psychological sciences and social sciences, vol 53B, no 3, May 1998 |
| Pages | pp P189-P200 |
| Keywords | Cognitive processes ; Mental speed ; United States of America. |
| Annotation | Some researchers have argued that ageing affects the slowing of processes in non-lexical tasks more than it does the slowing of processing in lexical tasks, but that within the task domains, the slowing is identical. Other researchers have argued that even with non-lexical tasks there is a differential slowing, such that ageing affects processing speed more in (non-lexical) co-ordinative tasks than it does in (non-lexical) sequential tasks. This US study formulated latent models of general and process-specific slowing in co-ordinative nonlexical tasks for older adults. A visual search task was then used to test the two types of models. It was found that the latent model of process-specific slowing explained significantly more of the variability than a latent model of general slowing, indicating that there is a differential slowing of processes among co-ordinative tasks within the non-lexical domain. It was also discovered that the co-ordinative process most greatly affected was that of deciding to terminate the search when no target was present in the display, indicating a possible difference in the slowing of strategic processes among both co-ordinative and sequential tasks within the non-lexical domain. (AKM). |
| Accession Number | CPA-980813416 A |
| Classmark | DA: DG: 7T |
Data © Centre for Policy on Ageing |
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| ...from the Ageinfo database published by Centre for Policy on Ageing. |
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