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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

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Published on: July 16, 2015

Interference between storage and processing in working memory: Feature overwriting, not similarity-based competition.

Klaus Oberauer1

  • 1University of Bristol, Bristol, England. k.oberauer@psychologie.uzh.ch

Memory & Cognition
|February 28, 2009
PubMed
Summary
This summary is machine-generated.

Concurrent processing disrupts short-term memory by distracting attention. Phonological overlap, not similarity, impairs recall by overwriting memory features, ruling out response competition.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Memory

Background:

  • Concurrent processing tasks often disrupt short-term memory retention.
  • Understanding the mechanisms of this interference is crucial for cognitive models.

Purpose of the Study:

  • To investigate the reasons behind short-term retention disruption during concurrent processing.
  • To differentiate between attention distraction, feature overwriting, and response competition as sources of interference.

Main Methods:

  • Eight experiments utilizing the complex span paradigm.
  • Manipulation of processing task pace and the nature of material (phonological/semantic similarity and overlap).
  • Assessment of recall performance under different interference conditions.

Main Results:

  • Increased processing task pace led to worse short-term recall, indicating attentional distraction.
  • Phonological overlap between memory items and processing task material negatively impacted recall.
  • Neither phonological nor semantic similarity impaired memory; similarity showed a beneficial effect.
  • Feature overwriting was identified as a significant source of interference.

Conclusions:

  • Attention distraction and feature overwriting are key mechanisms disrupting short-term retention in complex span tasks.
  • Phonological overlap is detrimental, while similarity can be beneficial to memory maintenance.
  • Response competition and confusion are unlikely explanations for the observed memory interference.