Evidence for discrete-state processing in recognition memory
- 20 August 2012
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 109 (36), 14357-14362
- https://doi.org/10.1073/pnas.1103880109
Abstract
We provide evidence that recognition memory is mediated by a detect-or-guess mental-state model without recourse to concepts of latent-strength or multiple-memory systems. We assess performance in a two-alternative forced-choice recognition memory task with confidence ratings. The key manipulation is that sometimes participants are asked which of two new items is old, and the resulting confidence distribution is unambiguously interpreted as arising from a guessing state. The confidence ratings for other conditions are seemingly the resultant of mixing this stable guessing state with an additional stable detect state. Formal model comparison supports this observation, and an analysis of associated response times reveals a mixture signature as well.Keywords
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