{"title":"年龄对随机数组字母消去测试的影响。","authors":"D S Geldmacher, T M Riedel","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>This study was designed to determine whether young and older adults differ in the spatial pattern of omission errors on random-array letter cancellation tasks.</p><p><strong>Background: </strong>Aging is associated with declines in the speed or efficiency of visual information processing. It is unclear whether the spatial characteristics of visual exploration also change with aging.</p><p><strong>Method: </strong>Thirty young adults and 30 older adults each completed 21 random-array cancellation forms. Forms were systematically varied in paper size, target-to-distractor ratio, stimulus density, and target number.</p><p><strong>Results: </strong>The spatial distribution of errors was not random for older adults. Younger adults expressed a trend toward nonrandom error location, but the spatial distribution did not differ between groups. There was also a strong trend toward more errors per subject in the older group. Older subjects required more time for task completion.</p><p><strong>Conclusions: </strong>The findings are consistent with a generalized age-related decline in the speed or efficiency of visual search, but the spatial properties of directed attention do not appear to be different between young and older adults.</p>","PeriodicalId":79516,"journal":{"name":"Neuropsychiatry, neuropsychology, and behavioral neurology","volume":"12 1","pages":"28-34"},"PeriodicalIF":0.0000,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Age effects on random-array letter cancellation tests.\",\"authors\":\"D S Geldmacher, T M Riedel\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>This study was designed to determine whether young and older adults differ in the spatial pattern of omission errors on random-array letter cancellation tasks.</p><p><strong>Background: </strong>Aging is associated with declines in the speed or efficiency of visual information processing. It is unclear whether the spatial characteristics of visual exploration also change with aging.</p><p><strong>Method: </strong>Thirty young adults and 30 older adults each completed 21 random-array cancellation forms. Forms were systematically varied in paper size, target-to-distractor ratio, stimulus density, and target number.</p><p><strong>Results: </strong>The spatial distribution of errors was not random for older adults. Younger adults expressed a trend toward nonrandom error location, but the spatial distribution did not differ between groups. There was also a strong trend toward more errors per subject in the older group. Older subjects required more time for task completion.</p><p><strong>Conclusions: </strong>The findings are consistent with a generalized age-related decline in the speed or efficiency of visual search, but the spatial properties of directed attention do not appear to be different between young and older adults.</p>\",\"PeriodicalId\":79516,\"journal\":{\"name\":\"Neuropsychiatry, neuropsychology, and behavioral neurology\",\"volume\":\"12 1\",\"pages\":\"28-34\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Neuropsychiatry, neuropsychology, and behavioral neurology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Neuropsychiatry, neuropsychology, and behavioral neurology","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Age effects on random-array letter cancellation tests.
Objective: This study was designed to determine whether young and older adults differ in the spatial pattern of omission errors on random-array letter cancellation tasks.
Background: Aging is associated with declines in the speed or efficiency of visual information processing. It is unclear whether the spatial characteristics of visual exploration also change with aging.
Method: Thirty young adults and 30 older adults each completed 21 random-array cancellation forms. Forms were systematically varied in paper size, target-to-distractor ratio, stimulus density, and target number.
Results: The spatial distribution of errors was not random for older adults. Younger adults expressed a trend toward nonrandom error location, but the spatial distribution did not differ between groups. There was also a strong trend toward more errors per subject in the older group. Older subjects required more time for task completion.
Conclusions: The findings are consistent with a generalized age-related decline in the speed or efficiency of visual search, but the spatial properties of directed attention do not appear to be different between young and older adults.
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