Such factors as “the collapse of the family structure, the surge in single parenting, persistent poverty, and chronic drug abuse can actually tip brain chemistry into an aggressive mode — an effect that was once thought impossible, ” says the book Inside the Brain.
وقایعی که در اطراف آنان رخ می‌دهد ،‏ در مغزشان تغییرات مولکولی بوجود می‌آورد و آنان را به امیالی آنی وامی‌دارد .‏ »