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. 2021 May 5;12:627561. doi: 10.3389/fpsyg.2021.627561

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Copyright © 2021 Küntzler, Höfling and Alpers.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Averaged human ratings separately for basic emotion categories for standardized (black bars) and non-standardized facial expressions (gray bars). (A) Depicts mean genuineness ratings ranging from 1 (very in-genuine) to 7 (very genuine). (B–H) Depict mean emotion ratings (percent) for (B) neutral, (C) joy, (D) anger, (E) disgust, (F) sadness, (G) fear, and (H) surprise expressions. Error bars are 95% confidence intervals.