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. 2019 Jun 28;19(13):2877. doi: 10.3390/s19132877

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Two (uninterrupted) parts of the experiment. (a) calibration part; (b) testing part. G: calibration game, Q: questionnaire about game/level, R: resting, ABC: levels of Infinite Mario, E: demographic questionnaire.