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Related Experiment Videos

The breadth of memory search.

Doug Rohrer1

  • 1Department of Psychology, University of South Florida, Tampa 33620-7800, USA. drohrer@chuma1.cas.usf.edu

Memory (Hove, England)
|July 5, 2002
PubMed
Summary
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Episodic memory search efficiently excludes unstudied semantic associates, focusing instead on items with shared temporal and spatial attributes. This finding differentiates episodic and semantic memory recall processes.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Memory Research

Background:

  • Recall of previously studied information is thought to involve a constrained search.
  • The extent to which this search includes semantic associates is debated.

Purpose of the Study:

  • To investigate whether episodic memory search includes unstudied semantic associates.
  • To empirically dissociate episodic and semantic memory search mechanisms.

Main Methods:

  • Participants performed an episodic memory task recalling studied items from small or large categories.
  • Participants completed a semantic memory task generating category exemplars.

Main Results:

  • Category size influenced recall time in the semantic task, but not the episodic task.

Related Experiment Videos

  • An empirical dissociation was observed between episodic and semantic memory recall.
  • Conclusions:

    • Episodic memory search appears to efficiently exclude unstudied semantic associates.
    • Episodic memory search is constrained by temporal and spatial episode attributes, unlike semantic memory.