Wilhelm Wundt
Edward B. Titchener, along with Wilhelm Wundt, is credited for the theory of structuralism. It is considered to be the first "school" of psychology. Because he was a student of Wilhelm Wundt at the University of Leipzig, Titchener's ideas on how the mind worked were heavily influenced by Wundt's theory of voluntarism and his ideas of association and apperception (the passive and active combinations of elements of consciousness respectively). Titchener attempted to classify the structures of the mind, like chemists classify the elements of nature, into the nature.