Discuss why this period of artistic development and the movements within hinge upon the human ...

Just as Einstein's radical theories of physics changed the way in which people viewed life and reality, Freud's exploration of the subconscious altered the way in which people defined themselves and, in turn, how they expressed themselves. As opposed to the rational and reasoned Enlightenment approach, the new psychology allowed an exploration of irrationality and the emotional elements in human nature. This new approach allowed for a level of self-expression and individuation that is unique to modern art. Artists brought to their work their hidden emotions, their repressed desires, and their dreams and fantasies, hoping to find a current in the collective unconscious and help provide some sort of meaningful experience in an era of extraordinary violence and chaos.