A three-response task reveals how attention alters decision criteria but not appearance.

There was a highly significant correlation, r = −0.54, p < 0.0001, between the α and τ parameters, such that the higher the modeled α , the smaller the modeled τ .

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There was an obvious trend across the three cued target contrast levels tested for the perceived contrast of the cued target to be higher than the veridical contrast, however this trend was not significant at any of the levels tested, although nearly so ( p = 0.054) for the 30% contrast stimuli.

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