Effective integration of serially presented stochastic cues

Mordechai Z. Juni, Todd M. Gureckis, Laurence T. Maloney

Research output: Contribution to journalArticle

Abstract

This study examines how people deal with inherently stochastic cues when estimating a latent environmental property. Seven cues to a hidden location were presented one at a time in rapid succession. The seven cues were sampled from seven different Gaussian distributions that shared a common mean but differed in precision (the reciprocal of variance). The experimental task was to estimate the common mean of the Gaussians from which the cues were drawn. Observers ran in two conditions on separate days. In the "decreasing precision" condition the seven cues were ordered from most precise to least precise. In the "increasing precision" condition this ordering was reversed. For each condition, we estimated the weight that each cue in the sequence had on observers' estimates and compared human performance to that of an ideal observer who maximizes expected gain. We found that observers integrated information from more than one cue, and that they adaptively gave more weight to more precise cues and less weight to less precise cues. However, they did not assign weights that would maximize their expected gain, even over the course of several hundred trials with corrective feedback. The cost to observers of their suboptimal performance was on average 16% of their maximum possible winnings.

Original languageEnglish (US)
Pages (from-to)1-16
Number of pages16
JournalJournal of Vision
Volume12
Issue number8
DOIs
StatePublished - 2012

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Cues
Weights and Measures
Normal Distribution
Costs and Cost Analysis

Keywords

  • Cue integration
  • Effective cue integration
  • Learning cue precisions
  • Sequential integration
  • Stochastic cues
  • Visual estimation

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Cite this

Effective integration of serially presented stochastic cues. / Juni, Mordechai Z.; Gureckis, Todd M.; Maloney, Laurence T.

In: Journal of Vision, Vol. 12, No. 8, 2012, p. 1-16.

Research output: Contribution to journalArticle

Juni, Mordechai Z. ; Gureckis, Todd M. ; Maloney, Laurence T. / Effective integration of serially presented stochastic cues. In: Journal of Vision. 2012 ; Vol. 12, No. 8. pp. 1-16.
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