The effect of vertical stretching on the extraction of mean identity from faces

Hole, Graham and Bagaini, Alexandra (2017) The effect of vertical stretching on the extraction of mean identity from faces. Perception. ISSN 0301-0066

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Abstract

Observers can extract the mean identity from a set of faces and falsely recognise it as a genuine set member (de Fockert & Wolfenstein, 2009). The current experiment demonstrated that this "perceptual averaging" also occurs with vertically stretched faces. On each trial, participants decided whether a target face was present in a preceding set of four faces. In the control condition, the faces were all normally proportioned; in the stretched set condition, the face sets were stretched but the targets were normal; and in the stretched target condition, the face sets were normal but the targets were stretched. In all three conditions, participants falsely identified the set mean as a face that had been presented within the set, implying that this identity-averaging effect is based on high-level identity information rather than the low-level physical characteristics of the face stimuli.

Item Type: Article
Keywords: Set averaging, ensemble coding, face recognition, vertical stretching
Schools and Departments: School of Psychology > Psychology
Depositing User: Ellena Adams
Date Deposited: 23 Jun 2017 11:23
Last Modified: 09 Jul 2017 21:30
URI: http://sro.sussex.ac.uk/id/eprint/68803

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