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

2. 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  , DOI: ( /j.cub )

3. 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  , DOI: ( /j.cub )