This would be in biology vitalism, in psychology sexualism (Freud), or some other ‘ism,’ in so far as it could be shown that the investigators reduced the energy of the total psyche to one definite force or drive.
Jung explicitly situates vitalism — the conceptual family to which élan vital belongs — as an inadmissible reduction of general psychic energy to a single specified force, thereby demarcating analytical psychology from Bergsonian and related frameworks.
, The Interpretation of Nature and the Psyche, 1955thesis