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

2. 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  , R760-R762DOI: ( /j.cub )
Copyright © 2016 Elsevier Ltd Terms and Conditions