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| Adult Development | 1 |
| Aging (Individuals) | 1 |
| Change | 1 |
| Clinical Diagnosis | 1 |
| Cognitive Processes | 1 |
| Older Adults | 1 |
| Schizophrenia | 1 |
| Twins | 1 |
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| International Journal of… | 1 |
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| Jarvik, Lissy F. | 1 |
| La Rue, Asenath | 1 |
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| Journal Articles | 1 |
| Reports - Research | 1 |
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Peer reviewedLa Rue, Asenath; Jarvik, Lissy F. – International Journal of Aging and Human Development, 1987
Examined longitudinal changes in cognitive functioning for aging twins. Found that those who were considered demented in old age had achieved lower test scores 20 years prior to diagnosis and experienced greater declines in vocabulary and forward digit span over time than those without dementia. Suggests that dementia may develop very slowly.…
Descriptors: Adult Development, Aging (Individuals), Change, Clinical Diagnosis
