Video_S6_Social-Responsivity

Movie S6: Social Responsivity Task. Across eight distinct trials, chimpanzees were presented with four social and four non-social stimuli. In each trial, E1 placed a stimulus on a testing table, while E2 initially centered the chimpanzee at a distance 2m away. E2 then left when the trial started, and the chimpanzees’ latency to approach the stimulus was examined (within a trial lasting 30s). Here, the chimpanzee was slower to approach a person and relatively faster to approach a novel object placed on the table.