Production and Comprehension of Gestures between Orang-Utans (Pongo pygmaeus) in a Referential Communication Game
Fig 3
Study 2: Comprehension of E1’s Points in Three Conditions (18 Trials per Condition).
No effect of condition was found on either frequency or accuracy of responses. While only Pini was above chance in responding accurately to E1’s points (p = 0.014), the group’s overall performance approached significance (p = 0.058).