- The Origin of Consciousness in the Breakdown of the Bicameral Mind is a 1976 book by the Princeton psychologist, psychohistorian and consciousness theorist Julian Jaynes (1920-1997). The book addresses the problematic nature of consciousness – “the ability to introspect” – which in Jaynes’ view must be distinguished from sensory awareness and other processes of cognition. Jaynes presents his proposed solution: that consciousness is a learned behavior based more on language and culture than on biology; this solution, in turn, points to the origin of consciousness in ancient human history rather than in metaphysical or evolutionary processes; furthermore, archaeological and historical evidence indicates that prior to the learning of consciousness, human mentality was what Jaynes called “the bicameral mind” – a mentality based on verbal hallucination.