Lacan
In 1957, Jacques Lacan - building on the way in Freud's work, condensation (from German Verdichtung) and displacement are closely linked concepts, and inspired by an article by linguist Roman Jakobson - argued that the unconscious has the structure of a language, and that condensation and displacement are close equivalents to the poetic functions of metaphor and metonymy. As he cautiously put it, 'in the case of Verschiebung, "displacement", the German term is closer to the idea of that veering off of signification that we see in metonymy, and which from its first appearance in Freud is represented as the most appropriate means used by the unconscious to foil censorship'.
Read more about this topic: Displacement (psychology)