ABSTRACT
As noted previously, much of the earliest research on déjà vu was conducted under the assumption that the experience may be diagnostic of psychological pathology. Some include the déjà vu experience in their defining set of psychotic symptoms (cf. Harriman, 1947). For example, Calkins (1916) suggests that déjà vu “… is paralleled by experiences characteristic of many forms of insanity …” (p. 260), and Pickford (1944) claims that “… there is no doubt that déjà vu can occur as an incidental symptom in a variety of psychotic conditions …” (p. 155). Although this orientation has skewed the manner in which déjà vu was examined in many research projects, it has yielded an extensive literature on the link between déjà vu and various forms of psychopathology.
