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. 2020 Jul 7;10:11141. doi: 10.1038/s41598-020-65525-9

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Plots of significant correlations of executive function tests and total verbal fluency sum score. The performance in verbal fluency task is represented by the total number of correct words produced across all three semantic VF tasks (t₁ + t₂ + t₃).The negative correlation in plot b-f are due to the divergent direction of the scores since these variables describe different types of errors, reaction or process times (the higher the worse the performance) while the performance in the verbal fluency is represented by the total amount of correct items (the higher the better).