Non-verbal communication enables children’s coordination in a “Stag Hunt” game

This study assessed the role of non-verbal communication in 4-year-old children’s decisions to coordinate with others. During a “Stag Hunt” game, the child and an adult individually and continually collected low-value prizes (hares). Occasionally, an alternative option of collecting a high-value prize (stag) cooperatively with the adult arose, but entailed a risk: a lone attempt on this prize by either player would leave that player empty handed. Children coordinated with the adult to obtain the high-value prize more often when that adult made mutual eye contact and smiled at them than when she attended to the prizes only. This suggests that neither verbal nor gestural communication are necessary for coordination: Minimal, non-verbal communication enables children’s coordination with others towards joint goals.