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. 2015 Nov 11;10(11):e0141106. doi: 10.1371/journal.pone.0141106

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© 2015 Munar 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 6 — Consistency results from Experiments 3 and 4. From left to right, 95% confidence interval of great apes’ choice consistency when stimuli pairs were presented for 84 ms for sharp-angled and curved contours (Experiment 3), and when stimuli pairs were presented until response for sharp-angled and curved contours (Experiment 4). The red line at value .50 indicates chance-level consistency.