Eye movement strategies in overall similarity and single-dimension sorting.


A free classification study is presented that uses eye-tracking to better characterize the strategies that are employed in the creation of overall similarity and single-dimension categories. The number of fixations across the dimensions and the proportion of dimensions fixated were significantly greater for overall similarity sorters than for single-dimension sorters. Single-dimension sorters generally fixated a single dimension from the outset, a strategy in line with the principles of SUSTAIN (Love, Medin, & Gureckis, 2004). The pattern of eye movements is consistent with the idea that overall similarity sorting can be a time consuming process that involves greater perceptual processing of the stimuli than single-dimension sorting.

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