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How meaningfulness and initial learning degree influence associative storage and retrieval processes: A multinomial

Wei Chu1,2, Philip I Pavlik3, Xiangen Hu4

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This summary is machine-generated.

Meaningfulness enhances memory storage but hinders retrieval, while initial learning boosts both. Both factors slow memory forgetting over time, clarifying how encoding impacts long-term memory retention.

Keywords:
Initial learning degreeMeaningfulnessMultinomial processing treePower forgetting functionRetention

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Memory Research

Background:

  • The impact of encoding factors like meaningfulness and initial learning on memory retention is debated.
  • Existing research often confounds storage and retrieval processes in memory retention measures.

Purpose of the Study:

  • To investigate how associative meaningfulness and initial learning distinctly affect memory storage and retrieval over time.
  • To disentangle the effects of encoding on latent cognitive processes in memory retention.

Main Methods:

  • Utilized a multinomial processing tree (MPT) model to isolate storage and retrieval probabilities.
  • Applied a power forgetting function to model time-dependent decay of memory storage.
  • Participants learned noun-noun pairs with varying meaningfulness and initial learning degrees, tested at multiple retention intervals.

Main Results:

  • High associative meaningfulness increased memory storage probability but decreased retrieval probability.
  • Greater initial learning enhanced both memory storage and retrieval processes.
  • Both higher meaningfulness and initial learning were linked to slower relative forgetting rates.

Conclusions:

  • Meaningfulness and initial learning have dissociable effects on memory.
  • Meaningfulness primarily boosts memory storage, while initial learning strengthens both storage and retrieval.
  • Encoding conditions significantly shape the dynamics of memory decay over time.