Listed this as nonfiction????? So many experts, all certain of their ideas, over such a long period of time. We learn new things every year, with so many studies, all claiming to have found FACTS. I will not claim to know the true reasons we think and act as we do but come on. My belief has always been that our genes have a great influence over how we develop into adulthood with our experiences in childhood being equally involved. VERY SIMPLE But these doctors of the mind must make it more complex or how else would they attain their fame, There is something the world has forgotten. COMMON SENSE / this was a slow read, glad to be done with it