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Centre for Policy on Ageing | |
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Longitudinal change in language production
— effects of aging and dementia on grammatical complexity and propositional content | | Author(s) | Susan Kemper, Marilyn Thompson, Janet Marquis |
| Journal title | Psychology and Aging, vol 16, no 4, December 2001 |
| Pages | pp 600-614 |
| Keywords | Cognitive processes ; Mental ageing ; Dementia ; Communication skills ; Longitudinal surveys ; United States of America. |
| Annotation | Mixed modelling was used to examine longitudinal changes in linguistic ability in healthier older people and older people with dementia. Language samples, vocabulary scores and digit span scores were collected annually from the healthy group, and every 6 months from those with dementia. The language samples were scored for grammatical complexity and propositional content. For the healthy group, age-related declines in grammatical complexity and propositional content were observed; the declines were most rapid in the mid-70s. For the group with dementia, grammatical complexity and propositional content also declined over time, regardless of age. Rates of decline were uniform across individuals. These analyses reveal how both grammatical complexity and propositional content are related to late-life changes in cognition in healthy older people as well as in those with dementia. Alzheimer's disease (AD) accelerates this decline, regardless of age. (RH). |
| Accession Number | CPA-020206205 A |
| Classmark | DA: D6: EA: UO: 3J: 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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