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Journal of Vision
In visual search experiments, the subject looks for a target item in a display containing different distractor items. The reaction time (RT) to find the target is measured as a function of the number of distractors (set size). RT is either constant, or increases linearly, with set size. Here we suggest a two-stage model for search in which items are first selected and then recognized. The selection process is modeled by (a) grouping items into a hierarchical cluster tree, in which each clusterdoi:10.1167/13.3.20 pmid:23902716 fatcat:a7zdjs7lqvcvrnl6kiyjjx4r3e