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dc.contributor.authorLandy, Michaelen_UK
dc.contributor.authorGoutcher, Rossen_UK
dc.contributor.authorTrommershäuser, Juliaen_UK
dc.contributor.authorMamassian, Pascalen_UK
dc.description.abstractWe investigate whether observers take into account their visual uncertainty in an optimal manner in a perceptual estimation task with explicit rewards and penalties for performance. Observers judged the mean orientation of a briefl. y presented texture consisting of a collection of line segments. The mean and, in some experiments, the variance of the distribution of line orientations changed from trial to trial. Subjects tried to maximize the number of points won in a " bet" on the mean texture orientation. They placed their bet by rotating a visual display that indicated two ranges of orientations: a reward region and a neighboring penalty region. Subjects won 100 points if the mean texture orientation fell within the reward region, and subjects lost points (0, 100, or 500, in separate blocks) if the mean orientation fell in the penalty region. We compared each subject, 's performance to a decision strategy that maximizes expected gain (MEG). For the nonzero- penalty conditions, this ideal strategy predicts subjects will adjust the payoff display to shift the center of the reward region away from the perceived mean texture orientation, putting the perceived mean orientation on the opposite side of the reward region from the penalty region. This shift is predicted to be larger for (1) larger penalties, (2) penalty regions located closer to the payoff region, and (3) larger stimulus variability. While some subjects, performance was nearly optimal, other subjects displayed a variety of suboptimal strategies when stimulus variability was high and changed unpredictably from trial to trial.en_UK
dc.publisherAssociation for Research in Vision and Ophthalmology (ARVO)en_UK
dc.relationLandy M, Goutcher R, Trommershäuser J & Mamassian P (2007) Visual estimation under risk. Journal of Vision, 7 (6), Art. No.: 4.
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.subjectstatistical decision theoryen_UK
dc.subjectorientation estimationen_UK
dc.titleVisual estimation under risken_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[4.full (2).pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.citation.jtitleJournal of Visionen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.publisher.addressROCKVILLE, MDen_UK
dc.contributor.affiliationNew York Universityen_UK
dc.contributor.affiliationGiessen Universityen_UK
dc.contributor.affiliationLaboratoire Psychologie de la Perceptionen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorLandy, Michael|en_UK
local.rioxx.authorGoutcher, Ross|0000-0002-0471-8373en_UK
local.rioxx.authorTrommershäuser, Julia|en_UK
local.rioxx.authorMamassian, Pascal|en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filename4.full (2).pdfen_UK
Appears in Collections:Psychology Journal Articles

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