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. Author manuscript; available in PMC: 2014 Oct 22.
Published in final edited form as: J Comp Psychol. 2008 May;122(2):176–185. doi: 10.1037/0735-7036.122.2.176

Figure 2.

Figure 2

Performance summary for Panzee (Pan troglodytes). Percentage accuracy is displayed in blocks of 10 trials for both meaningful and nonmeaningful stimuli. The horizontal line at 50% represents chance performance. Asterisks represent a performance level significantly different from chance.