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AI Hyperrealism: Why AI Faces Are Perceived as More Real Than Human Ones

Miller, Elizabeth J; Steward, Ben A; Witkower, Zak; Sutherland, Clare AM; Krumhuber, Eva G; Dawel, Amy; (2023) AI Hyperrealism: Why AI Faces Are Perceived as More Real Than Human Ones. Psychological Science 10.1177/09567976231207095. (In press). Green open access

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Abstract

Recent evidence shows that AI-generated faces are now indistinguishable from human faces. However, algorithms are trained disproportionately on White faces, and thus White AI faces may appear especially realistic. In Experiment 1 (N = 124 adults), alongside our reanalysis of previously published data, we showed that White AI faces are judged as human more often than actual human faces-a phenomenon we term AI hyperrealism. Paradoxically, people who made the most errors in this task were the most confident (a Dunning-Kruger effect). In Experiment 2 (N = 610 adults), we used face-space theory and participant qualitative reports to identify key facial attributes that distinguish AI from human faces but were misinterpreted by participants, leading to AI hyperrealism. However, the attributes permitted high accuracy using machine learning. These findings illustrate how psychological theory can inform understanding of AI outputs and provide direction for debiasing AI algorithms, thereby promoting the ethical use of AI.

Type: Article
Title: AI Hyperrealism: Why AI Faces Are Perceived as More Real Than Human Ones
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1177/09567976231207095
Publisher version: https://doi.org/10.1177/09567976231207095
Language: English
Additional information: © The Author(s) 2023. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/).
Keywords: StyleGAN2, artificial intelligence, face perception, face-space theory, generative adversarial network
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Experimental Psychology
URI: https://discovery.ucl.ac.uk/id/eprint/10181988
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