1 In psychoanalysis, a defence mechanism in which intolerable feelings, impulses, or thoughts are falsely attributed to other people. Sigmund Freud (1856–1939) developed the concept initially in relation to paranoia (delusional disorder), and later extended it to a wide range of psychological phenomena, but never provided a detailed analysis of it: in his celebrated case study entitled ‘Psycho-Analytic Notes on an Autobiographical Account of a Case of Paranoia (Dementia Paranoides)’ published in 1911, he wrote: ‘let us make up our minds to postpone the investigation of it (and with it that of the mechanism of paranoiac symptom formation in general) until some other occasion’ (Standard Edition, XII, pp. 9–82, at p. 66), but he never published any such investigation. See also externalization, projective identification, projective test, Schreber case.
2 An area where axons from a sense organ or another part of the nervous system terminate.
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