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Forgetting is an intrinsic aspect of human memory, characterized by the gradual loss or inaccessibility of information over time. Hermann Ebbinghaus, a pioneering psychologist, extensively studied this phenomenon and formulated the forgetting curve. This curve illustrates that memory loss occurs rapidly immediately after learning and then decelerates over time. Several mechanisms contribute to forgetting, including encoding failure, storage decay, retrieval failure, and interference.
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Retrieval-induced versus restudy-induced forgetting in serial order memory.

Masanori Kobayashi1, Taiji Ueno2, Jun Kawaguchi1,3

  • 1Division of Cognitive and Information Sciences, Faculty of Humanities and Social Sciences, Department of Humanities and Social Sciences, Yamagata University, Yamagata, Japan.

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Summary

Output interference in serial order memory is not retrieval-specific. Forgetting is likely due to active representations in working memory, not the retrieval act itself.

Keywords:
CompetitionInhibitionOutput interferenceRetrieval-induced forgettingSerial order memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Memory Research

Background:

  • Output interference is a key factor in serial position curves in memory.
  • The source of this interference (retrieval act vs. post-retrieval representations) is debated.

Purpose of the Study:

  • To investigate the underlying mechanisms of output interference in serial order memory.
  • To differentiate between retrieval-specific and non-retrieval-specific causes of forgetting.

Main Methods:

  • Utilized retrieval-induced forgetting paradigms adapted for serial order memory.
  • Conducted four preregistered experiments and one additional replication experiment.
  • Compared effects of retrieval practice with mere re-presentation of information.

Main Results:

  • Retrieval practice on part of an ordered list impaired order accuracy for unpracticed items.
  • The magnitude of this impairment was similar to merely re-presenting information.
  • This effect was consistent across experiments, indicating retrieval unspecificity.

Conclusions:

  • Output interference in serial order memory likely stems from active representations in working memory.
  • Findings suggest forgetting is not a direct consequence of the retrieval process itself.
  • Results align with the two-factor account of retrieval-induced forgetting in item memory.