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SUMMARY:Sensory Noise Increases Metacognitive Efficiency - Adam Triabhall
DTSTART:20230531T140000Z
DTEND:20230531T150000Z
UID:TALK201925@talks.cam.ac.uk
CONTACT:Adam Triabhall
DESCRIPTION:This week we will discuss and debate a recent paper by Bang an
 d colleagues\, published in the Journal of Experimental Psychology (2019).
 \n\nAbstract: “Metacognitive efficiency quantifies people’s ability to
  introspect into their own decision making relative to their ability to pe
 rform the primary task. Despite years of research\, it is still unclear ho
 w visual metacognitive efficiency can be manipulated. Here\, we show that 
 a hierarchical model of confidence generation makes a counterintuitive pre
 diction: Higher sensory noise should increase metacognitive efficiency. Th
 e reason for this is that hierarchical models assume that although the pri
 mary decision is corrupted only by sensory noise\, the confidence judgment
  is corrupted by both sensory and metacognitive noise. Therefore\, increas
 ing sensory noise has a smaller negative influence on the confidence judgm
 ent than on the perceptual decision\, resulting in increased metacognitive
  efficiency. To test this prediction\, we used a perceptual learning parad
 igm to decrease sensory noise. In Experiment 1\, 7 days of training led to
  a significant decrease in sensory noise and a corresponding decrease in m
 etacognitive efficiency. Experiment 2 showed the same effect in a brief 97
 -trial learning for each of 2 different tasks. Finally\, in Experiment 3\,
  we combined increasingly dissimilar stimulus contrasts to create conditio
 ns with higher sensory noise and observed a corresponding increase in meta
 cognitive efficiency. Our findings demonstrate the existence of a robust p
 ositive relationship between across-trial sensory noise and metacognitive 
 efficiency. These results could not be captured by a standard model in whi
 ch decision and confidence judgments are made based on the same underlying
  information. Thus\, our study provides direct evidence for the existence 
 of metacognitive noise that corrupts confidence but not the perceptual dec
 ision.” (Bang et al.\, 2019).\n\nReference: Bang\, J.W.\, Shekhar\, M.\,
  & Rahnev\, D. (2019). Sensory Noise Increases Metacognitive Efficiency. J
 ournal of Experimental Psychology. General\, 148(3)\, 437–452. https://d
 oi.org/10.1037/xge0000511
LOCATION:Zoom link: www.bayslab.org/craikjc
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