Naming problems in dementia: Semantic or lexical?

Arlene J. Astell*, Trevor A. Harley

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

31 Citations (Scopus)


The naming behaviour was explored of patients moderately deteriorated with probable Alzheimer's disease (pAD) by analysing responses made on a picture naming and two word-picture matching tasks for the same items. Naming responses were classified into target and non-target and the relationship between non-target responses and their targets were explored. It was found that semantic relatedness influenced these non-target responses but frequency and imageability did not. The pAD participants performed significantly better on the two word-picture matching tasks than the naming task, while there was no difference on these within- and between-category tasks. These findings are explored with reference to a two-stage model of lexical access, which has separate storage of semantic, lexical and phonological information. The participants' difficulties appear to lie largely in retrieving the labels for items they comprehend.

Original languageEnglish
Pages (from-to)357-374
Number of pages18
Issue number4-5
Publication statusPublished - Apr 1998
Externally publishedYes

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