Depth psychology
（重定向自Depth therapy）
Historically, depth psychology (from the German term Tiefenpsychologie), was coined by Eugen Bleuler to refer to psychoanalytic approaches to therapy and research which take the unconscious into account. The term was rapidly accepted in the year of its proposal (1914) by Sigmund Freud, to cover a topographical view of the mind in terms of different psychic systems.