Mean personality domain scores by genotype for chimpanzees living in Chimpanzee Sanctuary Uto, the sanctuary in Guinea, and the combined sample.

†The combined samples includes 26 subjects from Chimpanzee Sanctuary Uto, 21 subjects from Guinea, and a total of 10 subjects from the Kyoto University Primate Research Institute (n = 5), Higashiyama Zoo (n = 2), Itouzu-no-mori Zoo (n = 1), Kouchi Zoo (n = 1), and Tama Zoo (n = 1).