The demise of short-term memory revisited: empirical and computational investigations of recency effects

Psychol Rev. 2005 Jan;112(1):3-42. doi: 10.1037/0033-295X.112.1.3.

Abstract

In the single-store model of memory, the enhanced recall for the last items in a free-recall task (i.e., the recency effect) is understood to reflect a general property of memory rather than a separate short-term store. This interpretation is supported by the finding of a long-term recency effect under conditions that eliminate the contribution from the short-term store. In this article, evidence is reviewed showing that recency effects in the short and long terms have different properties, and it is suggested that 2 memory components are needed to account for the recency effects: an episodic contextual system with changing context and an activation-based short-term memory buffer that drives the encoding of item-context associations. A neurocomputational model based on these 2 components is shown to account for previously observed dissociations and to make novel predictions, which are confirmed in a set of experiments.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Computer Simulation*
  • Empirical Research
  • Humans
  • Memory, Short-Term*
  • Mental Recall
  • Psychology / statistics & numerical data*
  • Time Factors