Impaired ranking of semantic attributes in dementia |
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Authors: | Ellen Grober Herman Buschke Claudia Kawas Paula Fuld |
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Affiliation: | Albert Einstein College of Medicine USA |
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Abstract: | The present work explored the loss of semantic attributes that is said to occur in dementia. In the first two experiments, subjects had to select attributes that went with concepts like airplane and church. The finding that demented subjects maintained high levels of accuracy when selecting attributes suggested that the semantic content of their concepts was relatively well preserved. The organization of the content was explored in a third experiment by having subjects order attributes according to their relative importance in defining concepts. While demented subjects performed better than chance, they did not rank attributes as well as healthy aged subjects, suggesting a disruption in organization whereby the importance of central attributes is reduced. The hypothesized disruption in organization is viewed in relation to the learning and memory deficit that is the hallmark of the dementias. |
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Keywords: | Address correspondence and reprint requests to Dr. Ellen Grober The Saul Korey Department of Neurology VE 319 Albert Einstein College of Medicine 1300 Morris Park Avenue Bronx NY 10461. |
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