title: Scope of word meaning activation during sentence processing by young and older adults.
abstract: In a naming experiment, we examined word meaning activation on-line during sentence processing by younger and older adults. Sentences were biased to either the most or least frequently used meaning of a sentence-final ambiguous word. In order to determine the scope of initial meaning activation, targets represented either high- or low-salient semantic relationships to a single sense of the ambiguous word in context. Both age groups evidenced context-dependent activation of word meaning. In addition, context activated a wide scope of meaning that included both high- and low-salience aspects of the ambiguous words. These results contradict predictions based on the inhibition deficit hypothesis (Hasher & Zacks, 1988). However, they are compatible with an interactive activation model of language comprehension that does not discriminate among age groups.
authors.affiliation: University of Kansas, Lawrence, USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Hopkins
authors.forename: G
authors.initials: G
authors.lastname: Kellas
authors.forename: S T
authors.initials: ST
authors.lastname: Paul
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging / Q000523:psychology*; D004192:Discrimination, Psychological; D006801:Humans; D007807:Language Tests; D008875:Middle Aged; D011930:Reaction Time; D011932:Reading; D012660:Semantics; D013647:Task Performance and Analysis