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Christopher M Grindrod1, Adina L Raizen2

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Summary
This summary is machine-generated.

Older adults with lower processing speed struggle with idiom comprehension. High verbal fluency in older adults preserves context use, suggesting age-related changes in ambiguity resolution depend on processing speed.

Keywords:
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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Linguistics

Background:

  • Age-related cognitive decline affects processing speed.
  • Contextual information aids in resolving linguistic ambiguity, particularly for idioms.

Purpose of the Study:

  • To examine how age-related changes in processing speed, measured by verbal fluency, impact the use of context in understanding ambiguous idioms.
  • To determine if reduced processing speed in older adults affects their ability to resolve idiomatic ambiguity.

Main Methods:

  • A cross-modal priming experiment was conducted with younger and older adults.
  • Participants identified word targets following auditory sentence primes with either idiomatic or literal meanings.
  • Verbal fluency was assessed to index processing speed.

Main Results:

  • Older adults with high verbal fluency demonstrated context-dependent facilitation, similar to younger adults.
  • Older adults with low verbal fluency failed to show facilitation for literal meanings in literal contexts, indicating difficulty inhibiting figurative meanings.
  • This suggests that impaired context use in older adults is linked to reduced processing speed.

Conclusions:

  • Age-related declines in context use during ambiguity resolution are primarily observed in older adults with diminished processing speed.
  • Verbal fluency may serve as an indicator for the efficiency of frontally-mediated selection mechanisms crucial for resolving ambiguity.