Response consistency on a semantic memory task in persons with dementia of the Alzheimer type

Peter C. Knotek, Kathryn A. Bayles, Alfred W Kaszniak

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The purpose of this investigation was to determine the test-retest response consistency rate on a semantic memory task in persons with dementia of the Alzheimer type (DAT). Ten mildly and 13 moderately impaired DAT subjects and 14 normal controls matched for age, years of education, and estimated IQ participated in this study. The Peabody Picture Vocabulary Test (PPVT) was administered twice to each subject with a 7-day intertest interval. The mild and moderate DAT subjects responded inconsistently to significantly more PPVT items than normal controls. When the effects of guessing were considered, moderate DAT subjects gave significantly more inconsistent PPVT responses than normal controls and mild DAT subjects showed a trend toward giving more inconsistent responses. These results substantiate the conclusion that the impairment of specific conceptual knowledge in DAT subjects cannot be reliably measured with a single administration of a semantic memory task such as the PPVT.

Original languageEnglish (US)
Pages (from-to)465-475
Number of pages11
JournalBrain and Language
Volume38
Issue number4
DOIs
StatePublished - 1990

Fingerprint

dementia
Semantics
Language Tests
Alzheimer Disease
semantics
human being
vocabulary
Semantic Memory
Dementia
Alzheimer
Person
Education
Peabody Picture Vocabulary Test
trend
education

ASJC Scopus subject areas

  • Language and Linguistics
  • Neuroscience(all)
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology

Cite this

Response consistency on a semantic memory task in persons with dementia of the Alzheimer type. / Knotek, Peter C.; Bayles, Kathryn A.; Kaszniak, Alfred W.

In: Brain and Language, Vol. 38, No. 4, 1990, p. 465-475.

Research output: Contribution to journalArticle

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