Western Marxism
Engagement with non-Marxist systems of thought is a feature that distinguishes Western Marxism from schools of Marxism that preceded it. Many Western Marxists have drawn from psychoanalysis to explain the effect of culture on individual consciousness. Concepts taken from German "Lebensphilosophie", Weberian sociology, Piagetian psychology, French philosophy of science, phenomenology and existentialism have all been assimilated and critiqued by Western Marxists.