Lexical decisions in patients with Alzheimer's disease: some notes on automatic versus controlled processing.
This study examined the lexical decisions of age, gender and education matched groups of Alzheimer's disease (AD) and normally aging (NA) subjects. The subjects were asked to make lexical decisions on real word, pseudoword and nonword orthographic stimuli. Analysis of the data revealed that the accuracy of the lexical decisions of the AD group was comparable to those of their NA peers for real word stimuli, but significantly different for the pseudo-word and non-word stimuli. The findings appeared to support the notion that AD patients' single word decoding may be disrupted in a way that is not readily apparent during the mild stages of the disease course.
Snyder
L S
LS
Department of Communicative Disorders, California State University, Long Beach 90840, USA.
Holland
A L
AL
Forbes
M
M
D000368:Aged; D000544:Alzheimer Disease / Q000150:complications*; D005260:Female; D006801:Humans; D007806:Language Disorders / Q000150:complications* / Q000175:diagnosis*; D008297:Male; D014705:Verbal Behavior; D014825:Vocabulary