A signal detection theoretic approach for estimating metacognitive sensitivity from confidence ratings

Consciousness and Cognition 21 (1):422-430 (2012)

Authors
Brian Maniscalco
National Institutes of Health
Abstract
How should we measure metacognitive sensitivity, i.e. the efficacy with which observers’ confidence ratings discriminate between their own correct and incorrect stimulus classifications? We argue that currently available methods are inadequate because they are influenced by factors such as response bias and type 1 sensitivity . Extending the signal detection theory approach of Galvin, Podd, Drga, and Whitmore , we propose a method of measuring type 2 sensitivity that is free from these confounds. We call our measure meta-d′, which reflects how much information, in signal-to-noise units, is available for metacognition. Applying this novel method in a 2-interval forced choice visual task, we found that subjects’ metacognitive sensitivity was close to, but significantly below, optimality. We discuss the theoretical implications of these findings, as well as related computational issues of the method. We also provide free Matlab code for implementing the analysis
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DOI 10.1016/j.concog.2011.09.021
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Getting Technical About Awareness.Colin W. G. Clifford, Ehsan Arabzadeh & Justin A. Harris - 2008 - Trends in Cognitive Sciences 12 (2):54-58.

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