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. 2020 Nov 26;11:576466. doi: 10.3389/fpsyg.2020.576466

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Copyright © 2020 Fellman, Ritakallio, Waris, Jylkkä and Laine.

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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The five main stages of the study design. Those assessment points and measures not used in the present study are shaded in gray. *Other questionnaires implemented at baseline and/or follow-up included a questionnaire capturing subjective WM functioning in daily activities and questionnaires on the use of external or internal memory aids and strategies. We also surveyed engagement (i.e., motivation and alertness) and whether the participant was intoxicated during cognitive task performance.