Psychology and Revolution

According to the Materialist concept of Psychology, behavioral pattern is a function of external conditions, beginning with the prevailing means of production. Thus, for example, Selfishness is a reflection of Private Property, whereas Collective Consciousness reflects the collectivization of the Means of Production. However, in Marxism, that concept is itself implicitly a reflection of Capitalist conditions, an expression of the "natural" passivity of the Individual. In other words, the psychological negation of extant conditions that sparks revolutionary action is, at the same time, a negation of that concept of Psychology, a transformation that Marx-Engels do not seem to explain.