Consciousness

Home » Uncategorized » Heuristic use of perceptual evidence leads to dissociation between performance and metacognitive sensitivity

Heuristic use of perceptual evidence leads to dissociation between performance and metacognitive sensitivity

And more on the brain as an accumulator of evidence for behavioural decisions and/or awareness: Brian Maniscalco, Megan Peters and Hakwan Lau (at Lau’s UCLA lab) show in this psychophysics paper that sometimes an increase in decision accuracy can be accompanied by a decrease in metacognitive sensitivity. In particular, they explain how the “consciousness” information stream, as expressed in the level of confidence, is driven mainly by the response-congruent evidence, and is largely insensitive to the level of response-incongruent evidence. The perceptual decision itself, however, is driven equally by response-congruent and response-incongruent evidence. In other words, your behavioural decisions may be good, but your conscious awareness tends to look only at evidence confirming that decision, and has “done away” with any disconfirming information that the “lower” system might have had.

brian_maniscalco shapeimage_1 droppedimage Screen Shot 2016-02-03 at 23.43.35


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