who said psychology is the science of mental life
Psychology In 1890, William James defined psychology as "the science of mental life, both of its phenomena and their conditions". This definition enjoyed widespread currency for decades. However, this meaning was contested, notably by radical behaviorists such as John B. Watson, who in his 1913 manifesto defined the discipline of psychology as the acquisition of information useful to the control of behavior. Also since James defined it, the term more strongly connotes techniques of scientific experimentation.[11][12] Folk psychology refers to the understanding of ordinary people, as contrasted with that of psychology professionals.[13]
Structuralism (psychology) Edward B. Titchener, along with Wilhelm Wundt, is credited for the theory of structuralism. It is considered to be the first "school" of psychology[4][5]. 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.[6]