Social intelligence based on linear dominance rank

By chasing B, A was not trying to support the lowest-ranked C, nor trying to intervene in the conflict between B and C. The reason for the intervention is that A feels a risk of losing the higher rank if A tolerates B’s expression of dominance to C in front of A.

In this way, each individual behaves in a selfish manner, recognizing the dominance rank relationships between oneself and others, and also among the others. This is the social intelligence of Japanese macaques.

■References (Books, papers, Web articles, etc.)
ニホンザルの生態』  河合雅雄 (河出書房、1964)
サル学再考』  水原洋城 (群羊社、1986)
高崎山のサル』  伊谷純一郎 (講談社学術文庫、2010)

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