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. 2007 May 31;274(1620):1913–1918. doi: 10.1098/rspb.2007.0586

Figure 2.

Figure 2

Results showing the number of subjects that selectively inspected the box targeted by the experimenter's action (black bars) versus the box that the experimenter did not act towards (grey bars). P-values represent binomial probabilities with an α-level set to 0.05 (one-tailed predictions).