Rhesus Monkeys Attribute Perceptions to Others Jonathan I. Flombaum, Laurie R. Santos  Current Biology  Volume 15, Issue 5, Pages 447-452 (March 2005) DOI: 10.1016/j.cub.2004.12.076

Figure 1 The Experimental Setup and Results of Experiments One (A) and Two (B) Subjects were allowed to approach the grape in front of one of the two competitors while two camerapersons filmed them. Current Biology 2005 15, 447-452DOI: (10.1016/j.cub.2004.12.076)

Figure 2 Results of Experiments Three through Six (A–D) In each experiment, significantly more subjects (p values reflect binomial probabilities) retrieved grapes from the competitor who was unable to see them rather than the one who could. Current Biology 2005 15, 447-452DOI: (10.1016/j.cub.2004.12.076)