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Does the implicit outcomes expectancies shape learning and memory processes?

Isabel Carmona1, Paloma Marí-Beffa2, Angeles F Estévez3

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The differential outcomes procedure (DOP) enhances visual recognition memory, even when participants are unaware of the outcomes or training stimuli. This suggests unconscious processing benefits from differential reinforcement.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Learning and Memory

Background:

  • Previous studies show the differential outcomes procedure (DOP) improves learning and memory for symbolic relations and visuospatial recognition.
  • The DOP involves unique, explicit outcomes for correct choices, enhancing retention.

Purpose of the Study:

  • To investigate the impact of the DOP under non-conscious processing conditions.
  • To determine if the DOP's benefits extend to situations with subliminal stimuli or outcomes.

Main Methods:

  • A delayed visual recognition memory task was employed.
  • Experiments involved presenting sample stimuli and/or outcomes under subliminal (non-conscious) and supraliminal (conscious) conditions.
  • Participants were trained using the DOP.

Main Results:

  • Visual recognition memory improved when participants were trained with the DOP.
  • This enhancement occurred regardless of whether the outcomes (Experiment 1A) or stimuli (Experiment 1B) were consciously perceived.
  • This is the first evidence for the DOP's effectiveness under unconscious conditions.

Conclusions:

  • The differential outcomes procedure (DOP) benefits learning and memory even without conscious awareness of outcomes or stimuli.
  • Findings support the two-memory systems model in explaining the effects of differential outcomes on memory.
  • Unconscious processing can be modulated by reinforcement contingencies to improve memory performance.