Signatures of a Statistical Computation in the Human Sense of Confidence

Sanders, Joshua I, Hangya, Balázs, Kepecs, Adam (May 2016) Signatures of a Statistical Computation in the Human Sense of Confidence. Neuron, 90 (3). pp. 499-506. ISSN 0896-6273

URL: http://www.ncbi.nlm.nih.gov/pubmed/27151640
DOI: 10.1016/j.neuron.2016.03.025

Abstract

Summary Human confidence judgments are thought to originate from metacognitive processes that provide a subjective assessment about one’s beliefs. Alternatively, confidence is framed in mathematics as an objective statistical quantity: the probability that a chosen hypothesis is correct. Despite similar terminology, it remains unclear whether the subjective feeling of confidence is related to the objective, statistical computation of confidence. To address this, we collected confidence reports from humans performing perceptual and knowledge-based psychometric decision tasks. We observed two counterintuitive patterns relating confidence to choice and evidence: apparent overconfidence in choices based on uninformative evidence, and decreasing confidence with increasing evidence strength for erroneous choices. We show that these patterns lawfully arise from statistical confidence, and therefore occur even for perfectly calibrated confidence measures. Furthermore, statistical confidence quantitatively accounted for human confidence in our tasks without necessitating heuristic operations. Accordingly, we suggest that the human feeling of confidence originates from a mental computation of statistical confidence.

Item Type: Paper
Subjects: bioinformatics > computational biology > statistical analysis
CSHL Authors:
Communities: CSHL labs > Kepecs lab
Watson School > Publications
Depositing User: Matt Covey
Date: 4 May 2016
Date Deposited: 09 May 2016 19:22
Last Modified: 11 Jan 2019 21:57
PMCID: PMC5350614
Related URLs:
URI: http://repository.cshl.edu/id/eprint/32785

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