Impaired color word processing at an unattended location: Evidence from a Stroop task combined with inhibition of return |
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Authors: | Jong Moon Choi Yang Seok Cho Robert W Proctor |
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Institution: | 1.Purdue University,West Lafayette;2.Department of Psychology,Korea University,Seoul,Korea |
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Abstract: | A Stroop task with separate color bar and color word stimuli was combined with an inhibition-of-return procedure to examine
whether visual attention modulates color word processing. In Experiment 1, the color bar was presented at the cued location
and the color word at the uncued location, or vice versa, with a 100- or 1,050-msec stimulus onset asynchrony (SOA) between
cue and Stroop stimuli. In Experiment 2, on Stroop trials, the color bar was presented at a central fixated location and the
color word at a cued or uncued location above or below the color bar. In both experiments, with a 100-msec SOA, the Stroop
effect was numerically larger when the color word was displayed at the cued location than when it was displayed at the uncued
location, but with the 1,050-msec SOA, this relation between Stroop effect magnitude and location was reversed. These results
provide evidence that processing of the color word in the Stroop task is modulated by the location to which visual attention
is directed. |
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Keywords: | |
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