Fig. 1: Does ‘strength in numbers’ influence participation?
From: Group-level cooperation in chimpanzees is shaped by strong social ties
The effects of the presence of number of other females (a and c) and males (b and d) on the likelihood to participate in intergroup encounters in females (blue, 75 individuals) and males (orange, 36 individuals). Larger point denotes larger number of observations and dashed lines represent the model lines. Source data are provided as a Source Data file.
