Which part of the brain is responsible for decisions?

Why does a glass of water help settle a sore throat? What are the best ways to help heal a slipped disc? Which part of the brain helps us make decisions? What causes stuttering in speech? If a fly is travelling in a fast car, is it travelling at the same speed as the car? And at what age is our brain fully developed? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists (thenakedscientists.com/donate)