Summary: A new study shows that observing violence can make individuals more likely to act aggressively later, but the effect depends on familiarity. Male mice who watched familiar peers attack others became more violent afterward, driven by amygdala neurons that “prime” aggression. When these neurons were inhibited, the learned aggression disappeared, while activating them heightened violent responses. These findings highlight …
Read More »Aggression Is Contagious: Observing Violence Primes the Brain for Aggression
