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Two experiments were conducted with younger and older speakers. In Experiment 1, participants named single objects that were intact or visually degraded, while hearing distractor words that were phonologically related or unrelated to the object name. In both younger and older participants naming latencies were shorter for intact than for degraded objects and shorter when related than when unrelated distractors were presented. In Experiment 2, the single objects were replaced by object triplets, with the distractors being phonologically related to the first object's name. Naming latencies and gaze durations for the first object showed degradation and relatedness effects that were similar to those in single-object naming. Older participants were slower than younger participants when naming single objects and slower and less fluent on the second but not the first object when naming object triplets. The results of these experiments indicate that both younger and older speakers plan object names sequentially, but that older speakers use this planning strategy less efficiently.

Type

Journal article

Journal

Q J Exp Psychol (Hove)

Publication Date

08/2008

Volume

61

Pages

1217 - 1238

Keywords

Adult, Aged, Aged, 80 and over, Aging, Cognition Disorders, Humans, Middle Aged, Phonetics, Semantics, Speech, Verbal Behavior, Visual Perception