Noun
(psychology) The philosophical study of psychology and of the mind.
(psychology) A set of principles governing Freudian psychology.
(philosophy) The study of how human experience forms, filters perception and shapes identity.
Source: en.wiktionary.orgSigmund Freud, On Metapsychology (Penguin Freud Library 11) p. 39 He compared such phantasising to the way a 'nature reserve preserves its original state where everything. Source: Internet