Authors
Caleb Stone, Jason B Mattingley, Nathan J Evans, Dragan Rangelov
Published in
Journal of neurophysiology. Jul 22, 2026. Epub Jul 22, 2026.
Abstract
Metacognitive awareness of decision quality is important for adaptive decision-making. One marker of decision quality is the strength of internal evidence accumulation. Increasing sensitivity to evidence accumulation thus offers a potential mechanism for improving metacognition. To test this hypothesis, we trained two groups of participants (N=34 per group) to reproduce the motion direction of one of two sequentially presented dot-motion stimuli. Participants in the forced-choice group were instructed which stimulus to respond to, whereas those in the free-choice group chose which stimulus they responded to. This manipulation targeted the instrumental value of metacognitive awareness, as participants in the free-choice group could use metacognition to optimise their choices. Before and after training, participants completed a near-transfer motion-discrimination task and provided metacognitive judgments, allowing us to assess how training altered sensitivity to evidence accumulation. Evidence accumulation was measured using the centroparietal positivity (CPP) and the drift rate. Participants in both groups performed better and exhibited improved metacognition following training. Training increased sensitivity to the pre-decisional CPP in the free-choice group, and to the post-decisional CPP in the forced-choice group. Moreover, training increased sensitivity to the drift-rate in the free-choice group but not the forced-choice group. These results provide novel insights into the neurocognitive mechanisms underlying training-induced improvements in metacognition.
PMID:
42485023
Bibliographic data and abstract were imported from PubMed on 22 Jul 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 42
- Comments 0