What is dissociation in psychology


dissociation1) In the cognitive psychology (Cognition) one speaks of dissociation when the results of motor actions do not match the corresponding performance of perception. The perception judgment is subject to certain illusions (e.g. geometrical-optical illusions), by which the motor skills remain unaffected. Such dissociations can be found both for spatial properties of objects (size, orientation, localization) and for temporal properties (sequence, dating). Due to the existence of dissociations, it is assumed that the perception and control of motor actions partly fall back on separate representations of objects (or features). Examples: a) In the Müller-Lysian illusion) the perception of certain properties of objects (e.g. the length of the line) does not match their physical properties. Although the perceptual judgments are subject to these illusions, the motor behavior (e.g. pointing movements) remains unaffected. b) "Blindsight" patients show correct motor reactions (e.g. reaching for objects), but cannot indicate the size or orientation of the objects. c) Temporal dissociations: People can react faster to acoustic stimuli than to visual stimuli. The opposite picture emerges for dating in the chronological order judgment: the acoustic stimulus must be presented before the visual stimulus in order to be perceived as simultaneously. 2) In clinical psychology, loss of the physical and psychological unity of the person. The result is the appearance of psychological units that carry out courses of action that the person is not aware of, up to and including the appearance of independent sub-personalities (multiple personality, dissociative disorders, emotional inhibition).