psychoanalysis is the main 20th century branch of psychology first formally theorized by freud (essentially sets up the idea of the unconscious and the subliminal; dreams; the ego, id, superstructure etc.) and later developed by his swiss protege jung. that's how i understand it. it is a major part of 20th century modernist/post-modernist living, and arguably one of the most influential advancements in human understanding of the modern-era. right up there with marx, darwin, saussure, einstein and nietzsche. together they are probably the biggest intellectual/philosophical names that define our time.
libertarian benefit collector - anti-academic super-intellectual.
http://mixlr.com/the-little-phrase/