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. 2020 Apr 22;22(4):e13810. doi: 10.2196/13810

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©Anish Nag, Nick Haber, Catalin Voss, Serena Tamura, Jena Daniels, Jeffrey Ma, Bryan Chiang, Shasta Ramachandran, Jessey Schwartz, Terry Winograd, Carl Feinstein, Dennis P Wall. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 22.04.2020.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Study setup: (a) Study screen displaying facial affect stimuli and nonsocial distractors displayed for 6 seconds. (b) The screen displaying the list of emotions that the participant is asked to classify the face from. (c) A nonparticipant child wearing a Google Glass with a custom-built eye tracker fitted using a 3D-printed mount in a dry-run of the study protocol.