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Related Experiment Videos

Decrease in performance on the verbal fluency test as a function of time: evaluation in a young healthy sample

S F Crowe1

  • 1School of Psychological Science, La Trobe University, Bundoora, Australia. s.crowe@latrobe.edu.au

Journal of Clinical and Experimental Neuropsychology
|December 9, 1998
PubMed
Summary
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This study found that word production and word frequency decrease over time during fluency tasks. Participants initially access high-frequency words, which are then depleted, leading to lower output.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Linguistics

Background:

  • Verbal fluency tasks assess word retrieval abilities.
  • Understanding factors influencing word production is crucial for cognitive research.

Purpose of the Study:

  • To investigate how word production and word frequency change over time during verbal fluency tasks.
  • To examine the impact of category size and search strategy on word retrieval.

Main Methods:

  • Participants generated words under different conditions (large/small categories, initial letter/semantic search).
  • Word production was recorded across 15-second intervals.
  • Word frequency was analyzed for each time slice.

Main Results:

Related Experiment Videos

  • Word production and frequency were highest at the beginning of each task.
  • Both production and frequency decreased as task duration increased.
  • These patterns were consistent across different fluency tasks.

Conclusions:

  • Verbal fluency tasks likely involve accessing a finite store of high-frequency words.
  • Task duration leads to the depletion of this accessible word store, reducing output and word frequency.