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Related Experiment Videos

Optimal testing time for suppression of competitors during interference resolution.

K W Joan Ngo1,2, Lynn Hasher1,2

  • 1a Department of Psychology , University of Toronto , Toronto , ON , Canada.

Memory (Hove, England)
|April 1, 2017
PubMed
Summary
This summary is machine-generated.

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Young adults effectively suppress competing memories during optimal arousal periods. However, during non-optimal times, memory suppression fails, and competitors may even strengthen, indicating circadian arousal impacts memory resolution.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Chronobiology

Background:

  • Memory interference is a common cause of memory failure.
  • A retrieval suppression mechanism resolves interference.
  • Previous research shows age-related differences in suppression.

Purpose of the Study:

  • To investigate if memory suppression ability varies with circadian arousal.
  • To examine the impact of optimal versus non-optimal testing times on memory suppression in young adults.

Main Methods:

  • Adaptation of the Healey, Ngo, and Hasher (2014) suppression paradigm.
  • Testing young adults at optimal and non-optimal times of day.
  • Measuring the suppression of competing memory traces.
Keywords:
Suppressionchronotypecircadianinhibition

Related Experiment Videos

Main Results:

  • Replication of below-baseline suppression in young adults at optimal times.
  • Absence of competitor suppression in young adults during non-optimal times.
  • Strengthening of competitors at non-optimal testing times.

Conclusions:

  • Circadian arousal significantly influences the ability to resolve memory interference via suppression.
  • Optimal arousal periods facilitate effective memory suppression.
  • Non-optimal arousal periods impair memory suppression and can strengthen interference.