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. 2015 Jul 15;10(7):e0131610. doi: 10.1371/journal.pone.0131610

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© 2015 Polgár et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 5 — Dashed line represents chance level for correct choices. Note that in the 2^nd trial the target was never positioned to the same place as it was in the 1^st. From the 3^rd trial onward a win-stay choice (choosing the position the owner was located in the previous trial) could be either correct or incorrect.