On the final page of his Psychology (Briefer Course) (1892), a condensed version of his monumental Principles of Psychology (1890), Harvard psychologist/philosopher William James reflected on the “New Psychology” of the 19th century and concluded that psychology “is no science, it is only the hope of a science” (p. 468). In the 20th century that hope became reality. This chapter, necessarily incomplete, will trace the evolution of the discipline of psychology from a potential science at the start of the 20th century to a real one by the end of the century. Any organizational scheme will be arbitrary, and the choice here is topical, with the chapter segmented into two main sections that roughly parallel the ...
Psychology in the 20th Century
Psychology in the 20th century