Behavior: Warriors Shaking Hands Sonja E. Koski  Current Biology  Volume 26, Issue 16, Pages R760-R762 (August 2016) DOI: 10.1016/j.cub.2016.06.058 Copyright © 2016 Elsevier Ltd Terms and Conditions

Figure 1 Human and chimpanzee males show more affiliation than females after conflicts. Human (A) and chimpanzee (B) males affiliate more after conflicts than females. Post-conflict affiliation restores the cooperative bond between the contestants, which the new study by Benenson and Wrangham [1] shows to be male-biased in humans, similar to our chimpanzee cousins. Current Biology 2016 26, R760-R762DOI: (10.1016/j.cub.2016.06.058) Copyright © 2016 Elsevier Ltd Terms and Conditions