Projection tends to come to the fore in normal people at times of personal or political crisis but is more commonly found in personalities functioning at a primitive level as in narcissistic personality disorder or borderline personality disorder.
Carl Jung considered that the unacceptable parts of the personality represented by the Shadow archetype were particularly likely to give rise to projection, both small-scale and on a national/international basis. Marie-Louise Von Franz extended her view of projection, stating that “wherever known reality stops, where we touch the unknown, there we project an archetypal image”.
Psychological projection is one of the medical explanations of bewitchment used to explain the behavior of the afflicted children at Salem in 1692. The historian John Demos asserts that the symptoms of bewitchment experienced by the afflicted girls were due to the girls undergoing psychological projection of repressed aggression.