James Hyman and doctoral student Lauren Crew (both Psychology), along with Herb Covington of Tufts University, write in Current Biology about the anterior cingulate cortex's role in mediating aggression. Violent behavior is the product of a diverse network of neural structures. A new study shows that the anterior cingulate cortex is important for helping to restrain overly aggressive acts, even within a fight, to ensure animals match their behavioral intensity with the challenge posed by their opponents.