Where does our personality come from? Obviously our brains have a lot to do with it, but is it genetic differences in our brains that lead to differences in how we think? Is it all in our upbringing and childhood experiences? Or is it something else? To tackle this question, we sit down with Kevin Mitchell, an Associate Professor of Genetics and Neuroscience at Trinity College Dublin and author of the book Innate: How the wiring of our brains shapes who we are.