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. 2018 Apr 11;9:491. doi: 10.3389/fpsyg.2018.00491

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Copyright © 2018 Knez, Ode Sang, Gunnarsson and Hedblom.

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 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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Photos (by Erik Heyman) of the six different settings (from a previous open access publication, Hedblom et al., 2017) representing high vs. low naturalness.