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The [[concept ]] of metapsychology was created by [[Freud ]] to refer to the most [[theoretical ]] and abstract elements of [[psychoanalysis]]. It consists of a set of laws, principles, and fundamental [[concepts ]] used to [[represent ]] and describe the operation of the [[mental ]] [[apparatus ]] in [[three ]] fundamental [[structural ]] aspects: [[dynamic]], [[topographical]], and [[economic]].

The term itself appeared early in Freud's [[work ]] and is found in a [[letter ]] to Wilhelm [[Fliess]]. It was most likely coined by analogy with the [[philosophical ]] term "[[metaphysics]]," which Freud proposed to..