Covert orienting: A compound-cue account of the proportion cued effect |
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Authors: | Evan F Risko Chris Blais Jennifer A Stolz Derek Besner |
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Institution: | (1) Department of Psychology, Washington University, St. Louis, MO 63130, USA |
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Abstract: | An increase in the proportion of spatially cued trials in the context of the covert orienting paradigm increases the magnitude
of the cuing effect. This proportion cued effect is widely interpreted to reflect a form of control. Specifically, it is argued
that participants strategically allocate attention as a function of the utility of the spatial cue. Here, an alternative explanation
of the proportion cued effect is proposed that does not require control. According to this account, the cue-target event forms
a compound cue and the proportion cued manipulation produces a relative disparity in the frequency with which particular compound
cues occur. Specifically, when the proportion of spatially cued trials is increased, the frequency of spatially cued cue-target
events increases and the frequency of spatially miscued cue-target events decreases, thus increasing the magnitude of the
cuing effect. The results of two experiments support this account. |
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