Individual Differences in Representational Precision Predict Spatial Working Memory Span

Steven A. Marchette, Megan W. Sever, Jonathan I. Flombaum, Amy L. Shelton

Research output: Contribution to journalArticle

Abstract

Perhaps the signature feature of working memory is that it is limited. In the same subjects, we used two different retrieval tasks to independently measure two different limits of spatial memory. Precision was measured by asking participants to localize a missing target item among a field of other targets and distracters. Capacity was measured with a similar task where participants identified, rather than localized, a set of remembered targets from within a larger set of identical items. Across participants, the precision of localization was positively correlated with the number of successfully retrieved items. These data suggest that an individual's representational capacity may ultimately be constrained by their ability to form precise representations of space.

Original languageEnglish (US)
Pages (from-to)308-328
Number of pages21
JournalSpatial Cognition and Computation
Volume15
Issue number4
DOIs
Publication statusPublished - Oct 2 2015

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Keywords

  • individual differences
  • memory capacity
  • memory precision
  • spatial representation
  • spatial working memory

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Computer Vision and Pattern Recognition
  • Modeling and Simulation
  • Earth-Surface Processes
  • Experimental and Cognitive Psychology

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