Becoming an adult means learning a huge body of lore as much as it means learning to know right from wrong.

NEWYORKER: The Dragon��s Egg

Again, in some jurisdictions, it differs, but at least in Arizona, the legal test is, were you too sick to know right from wrong?

NPR: Slate's Jurisprudence: Moussaoui's Insanity Defense

Defence lawyers said the boy, who had grown up in an abusive environment, was too young to know right from wrong when he pulled the trigger in May 2011.

BBC: Boy found responsible for killing neo-Nazi father