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General slowing in semantic priming and word recognition.

J Myerson1, F R Ferraro, S Hale

  • 1Department of Psychology, Washington University, St. Louis, Missouri 63130.

Psychology and Aging
|June 1, 1992
PubMed
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Older adults exhibit a general slowing factor of approximately 1.5 in lexical information processing compared to younger adults, affecting both word recognition and semantic priming.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Aging Research

Background:

  • Investigating age-related cognitive changes is crucial for understanding cognitive decline.
  • Lexical decision and word-naming tasks are standard measures of cognitive processing speed.

Purpose of the Study:

  • To quantify the age-related slowing in lexical information processing.
  • To determine if slowing affects different components of word recognition uniformly.

Main Methods:

  • Analysis of lexical decision tasks comparing older and younger adults' semantic priming effects.
  • Analysis of word-naming tasks to assess processing speed.
  • Examination of delayed pronunciation data to differentiate recognition and output processes.

Related Experiment Videos

Main Results:

  • Older adults showed a 1.44 times larger semantic priming effect than younger adults.
  • A consistent slowing factor of approximately 1.5 was observed across lexical tasks and component processes.
  • Word recognition was 1.47 times slower in older adults, while output processes were 1.26 times slower.

Conclusions:

  • A general slowing factor of about 1.5 characterizes lexical information processing in older adults.
  • This slowing appears to affect recognition processes more than output processes.
  • Findings suggest a pervasive age-related decline in cognitive processing speed.