Fearful faces have a sensory advantage in the competition for awareness


Hedger, N., Adams, W.J. and Garner, M. (2015) Fearful faces have a sensory advantage in the competition for awareness Journal of Experimental Psychology Human Perception & Performance, 41, (6), pp. 1748-1757. (http://doi.org/10.1037/xhp0000127). (PMID:26280260).

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Description/Abstract

Only a subset of visual signals give rise to a conscious percept. Threat signals, such as fearful faces, are particularly salient to human vision. Research suggests that fearful faces are evaluated without awareness and preferentially promoted to conscious perception. This agrees with evolutionary theories that posit a dedicated pathway specialized in processing threat-relevant signals. We propose an alternative explanation for this “fear advantage.” Using psychophysical data from continuous flash suppression (CFS) and masking experiments, we demonstrate that awareness of facial expressions is predicted by effective contrast: the relationship between their Fourier spectrum and the contrast sensitivity function. Fearful faces have higher effective contrast than neutral expressions and this, not threat content, predicts their enhanced access to awareness. Importantly, our findings do not support the existence of a specialized mechanism that promotes threatening stimuli to awareness. Rather, our data suggest that evolutionary or learned adaptations have molded the fearful expression to exploit our general-purpose sensory mechanisms.

Item Type: Article
Digital Object Identifier (DOI): http://doi.org/10.1037/xhp0000127
ISSNs: 0096-1523 (print)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Organisations: Psychology
ePrint ID: 379574
Date :
Date Event
July 2015Published
Date Deposited: 07 Aug 2015 07:45
Last Modified: 17 Apr 2017 05:33
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/379574

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