Post-decision wagering objectively measures awareness.
Navindra Persaud, Peter McLeod, Alan Cowey
Nature Neuroscience February 2007 DOI: 10.1038/nn1840 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Experimental study Peer reviewed |
|---|---|
| Measures | post-decision wagering |
| Key findings | Participants failed to maximize cash earnings by wagering high following correct decisions in blindsight, the Iowa gambling task, and an artificial grammar task. The authors argue this demonstrates, without the uncertainties of subjective measures like verbal reports and confidence ratings, that participants were not aware their decisions were correct. |
Abstract
The lack of an accepted measure of awareness has made claims that accurate decisions can be made without awareness controversial. Here we introduce a new objective measure of awareness, post-decision wagering. We show that participants fail to maximize cash earnings by wagering high following correct decisions in blindsight, the Iowa gambling task and an artificial grammar task. This demonstrates, without the uncertainties associated with the conventional subjective measures of awareness (verbal reports and confidence ratings), that the participants were not aware that their decisions were correct. Post-decision wagering may be used to study the neural correlates of consciousness.
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