New research scanned brains across 12 macaque species and found tolerant societies — not aggressive ones — predict larger amygdalae, with inverted developmental trajectories that flip the standard primate pattern. #Primatology #BrainEvolution #SocialBrain https://www.primatology.net/p/the-tolerant-brain-what-macaque-amygdalae
The Tolerant Brain: What Macaque Amygdalae Tell Us About the Evolution of Social Life

A new study scanned the brains of 12 macaque species and found that tolerance, not aggression, predicts amygdala size — and the developmental story is stranger than expected.

Primatology.net