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Analysis of spontaneous, conversational speech in dementia of Alzheimer type: evaluation of an objective technique for analysing lexical performance

Analysis of spontaneous, conversational speech in dementia of Alzheimer type: evaluation of an objective technique for analysing lexical performance
Analysis of spontaneous, conversational speech in dementia of Alzheimer type: evaluation of an objective technique for analysing lexical performance
Spontaneous, conversational speech in probable dementia of Alzheimer type (DAT) participants and healthy older controls was analysed using eight linguistic measures. These were evaluated for their usefulness in discriminating between healthy and demented individuals. The measures were; noun rate, pronounrate, verb rate, adjective rate, clause-like semantic unit rate (all per 100 words), including three lexical richness measures; type token ratio (TTR), Brunet's Index (W) and Honore's statistic (R). Results suggest that these measures offer a sensitive method of assessing spontaneous speech output in DAT. Comparison between DAT and healthy older participants demonstrates that these measures discriminate well between these groups. This method shows promise as a diagnostic and prognostic tool, and as a measure for use in clinical trials. Further validation in a large sample of patient versus control 'norms' in addition to evaluation in other types of dementia is considered.
0268-7038
71-91
Bucks, R.S.
59acfbce-ed79-45b1-82e0-3f493a3b63a0
Singh, S.
a9cd7e50-e572-4cba-a98d-f3f73372097b
Cuerden, J.M.
ad8c6a7e-eed4-4c2f-b889-10ab89655cab
Wilcock, G.K.
915b1584-4495-4d5f-a23f-c309d039cbf2
Bucks, R.S.
59acfbce-ed79-45b1-82e0-3f493a3b63a0
Singh, S.
a9cd7e50-e572-4cba-a98d-f3f73372097b
Cuerden, J.M.
ad8c6a7e-eed4-4c2f-b889-10ab89655cab
Wilcock, G.K.
915b1584-4495-4d5f-a23f-c309d039cbf2

Bucks, R.S., Singh, S., Cuerden, J.M. and Wilcock, G.K. (2000) Analysis of spontaneous, conversational speech in dementia of Alzheimer type: evaluation of an objective technique for analysing lexical performance. Aphasiology, 14 (1), 71-91.

Record type: Article

Abstract

Spontaneous, conversational speech in probable dementia of Alzheimer type (DAT) participants and healthy older controls was analysed using eight linguistic measures. These were evaluated for their usefulness in discriminating between healthy and demented individuals. The measures were; noun rate, pronounrate, verb rate, adjective rate, clause-like semantic unit rate (all per 100 words), including three lexical richness measures; type token ratio (TTR), Brunet's Index (W) and Honore's statistic (R). Results suggest that these measures offer a sensitive method of assessing spontaneous speech output in DAT. Comparison between DAT and healthy older participants demonstrates that these measures discriminate well between these groups. This method shows promise as a diagnostic and prognostic tool, and as a measure for use in clinical trials. Further validation in a large sample of patient versus control 'norms' in addition to evaluation in other types of dementia is considered.

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Published date: 2000

Identifiers

Local EPrints ID: 18566
URI: https://eprints.soton.ac.uk/id/eprint/18566
ISSN: 0268-7038
PURE UUID: 6c2991fa-7f6d-4368-bedc-e56cb25591d1

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Date deposited: 05 Dec 2005
Last modified: 08 Nov 2017 12:38

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