Ep.54. Can the Quality of Visual Working Memory Vary Within an Individual?

"Variability in the quality of visual working memory" by Daryl Fougnie, Jordan W. Suchow & George A. Alvarez Summary This research paper challenges established cognitive models of visual working memory by demonstrating significant variability in the quality of individual memory representations. The authors, using a colour-dot recall task and sophisticated statistical modelling (including variable-precision models superior to fixed-precision models using AIC), show that this variability cannot be explained by fluctuations in attention or uneven resource allocation. Instead, they propose a new framework where memory degradation is a stochastic process, acting independently on each memory item, thus impacting the precision of recall. This finding suggests that working memory limitations stem not only from capacity constraints but also from the inherent instability of stored information.

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