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. 2011 Aug 24;6(8):e23345. doi: 10.1371/journal.pone.0023345

Figure 3. Proportion of correct choices on trials with a vocalization from the monkey seen in the sample video (Congruent), without a vocalization (Control), or with a vocalization from a monkey other than the one seen in the sample video (Incongruent) in Experiment 2.

Figure 3

Accuracy expected by chance is 0.2.