Dual process theory is a way of explaining how people think. It suggests that when we are making decisions or choices, we do it in two different ways. The first is called the "intuition" style of thinking, which is when we rely on our gut feelings or automatic thoughts to figure out what to do. The other way of thinking is called the "reasoning" style, where we use logic and facts to decide what we should do. Dual process theory suggests that both of these approaches to thinking are important and help us make better decisions.