Even though it was the beginning of psychology, it caused a lot of controversy. (Unit 8 Introduction.) The structuralists were influenced by the chemists who had discovered the elements of the periodic table. The essence of structuralism was to understand the elements of the mind, today called mental chemistry. (Hergenhahn & Henley, 2014.) Wilhelm Wundt was an important person in this school. He believed that the difference in reaction time would challenge the brain and measure decision making. (Unit 8 Introduction.) Wundt's version of testing decision making would often involve using introspection. A psychology based on introspection was difficult to defend. Two groups, Titchener and Würzburg, disagreed. (Introspection video.) These two groups of structuralism are engaged in an argument with no proven solution. As a result, a number of new schools emerged, each with a different problem with structuralism. Behaviorists firmly believed that introspection would never be a science. The functionalists wanted a practical school, emphasizing education and individual differences. Psychoanalysts wanted to help people suffering from anxiety and depression. (Unit 8 Introduction.) These and other divergent views lead to the death of structuralism. Today there are more than ten schools of psychology. (Introspection