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Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • Intentional forgetting involves actively suppressing unwanted memories.
  • Previous research has explored various forgetting strategies with limited comparative analysis.

Purpose of the Study:

  • To investigate the differential effects of passive decay and active rehearsal strategies on intentional forgetting.
  • To examine the behavioral and neural correlates of these forgetting strategies using electroencephalogram (EEG).

Main Methods:

  • An item-method directed forgetting paradigm was employed in a between-subjects design.
  • Electroencephalogram (EEG) data were recorded during the task.
  • Behavioral recognition accuracy and event-related potentials (ERPs) were analyzed.

Main Results:

  • Both passive decay and active rehearsal induced a directed forgetting (DF) effect.
  • The active rehearsal group demonstrated superior recognition of to-be-remembered (TBR) words.
  • EEG analysis revealed distinct neural patterns associated with each strategy, including differences in P2-P3 complex, P600, and time-frequency activity.

Conclusions:

  • Forgetting strategies do not impact the recall of to-be-forgotten (TBF) words.
  • Active rehearsal facilitates TBR word recognition by promoting attentional shifts away from TBF words.
  • Distinct neural mechanisms underlie passive decay and active rehearsal during intentional forgetting.