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. 2019 Jun 12;11:133. doi: 10.3389/fnagi.2019.00133

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Copyright © 2019 Pieruccini-Faria, Lord, Toson, Kemmler and Schoene.

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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Concept formation ability as measured by the number of trials needed to shift first set during the short version of the Wisconsin Card Sorting Test (WCST) according to balance (sway tertiles) and faller status (one or more falls). Panel (A) shows a decline in concept formation performance across sway tertiles; Panel (B) shows the additional impact of faller status. Across sway tertiles the concept formation ability did not differ in non-fallers (blue). However, with decreasing balance status, fallers had greater difficulties to implicitly understand the first rule (red).