TY - JOUR
T1 - Cross-sectional analysis of Alzheimer disease effects on oral discourse in a picture description task
AU - Tomoeda, Cheryl K.
AU - Bayles, Kathryn A.
AU - Trosset, Michael W.
AU - Azuma, Tamiko
AU - McGeagh, Anna
PY - 1996
Y1 - 1996
N2 - To examine the relation of dementia severity to the quality and quantity of oral discourse of individuals with Alzheimer disease (AD), a picture description task was administered to elicit oral discourse samples from 63 AD subjects, five individuals with very mild cognitive impairment, and 52 normal controls. Eight measures of discourse were used: total words, information units, conciseness, circumlocutions, frustrations, aborted phrases, revisions, and ideational repetitions. Information units, which decreased with increased dementia severity, proved to be the best measure for evaluating the effects of AD on oral descriptive discourse. The conciseness index also decreased with increased dementia severity, and a significantly greater proportion of AD discourse samples contained ideational repetitions. Circumlocutions and frustrations rarely occurred, and although the discourse of AD subjects was more likely to contain an aborted phrase, the frequency of aborted phrases did not vary by stage of dementia. Revisions were commonly observed in the discourse of both normal controls and AD subjects and did not differentiate the two groups.
AB - To examine the relation of dementia severity to the quality and quantity of oral discourse of individuals with Alzheimer disease (AD), a picture description task was administered to elicit oral discourse samples from 63 AD subjects, five individuals with very mild cognitive impairment, and 52 normal controls. Eight measures of discourse were used: total words, information units, conciseness, circumlocutions, frustrations, aborted phrases, revisions, and ideational repetitions. Information units, which decreased with increased dementia severity, proved to be the best measure for evaluating the effects of AD on oral descriptive discourse. The conciseness index also decreased with increased dementia severity, and a significantly greater proportion of AD discourse samples contained ideational repetitions. Circumlocutions and frustrations rarely occurred, and although the discourse of AD subjects was more likely to contain an aborted phrase, the frequency of aborted phrases did not vary by stage of dementia. Revisions were commonly observed in the discourse of both normal controls and AD subjects and did not differentiate the two groups.
KW - Communication
KW - Dementia
KW - Discourse
KW - Language
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U2 - 10.1097/00002093-199601040-00006
DO - 10.1097/00002093-199601040-00006
M3 - Article
C2 - 8939280
AN - SCOPUS:0029801102
SN - 0893-0341
VL - 10
SP - 204
EP - 215
JO - Alzheimer Disease and Associated Disorders
JF - Alzheimer Disease and Associated Disorders
IS - 4
ER -