Figure 2

Distributions of behavioral types across ethnic groups with locations. Ethnic groups from Tanzania: Hadza, Iraqw, Meru, Haya; ethnic groups from Russia: Russians, Tuvans, Buryats. Rural locations: Eyasi, Makumira, Kamachumu, Toora-Khem, Atsagat; semi-rural location: Moscow countryside; urban locations: Moscow, Ulan-Ude. (a) Behavioral tendencies toward stranger partners; (b) behavioral tendencies toward friends.