This period of time gave rise to Nihilism, the idea that an individual is the only body that matters in a world where purpose of life is not apparent. Because of this concept, brought to life partly by the new science of psychology and the literature of Nietzsche, artforms began to express this glorification of the individual, and the mystery behind its purpose. Stream of consciousness literature developed at this time. In this technique, the rambling and musings of a writer continued on, writing what came to mind. The desire of delving to one's mind, created by Nihilism, harbored this writing style. In addition, in post-impressionistic art, psychological aspects of the artist began to become the focal point of art, as to determine the purpose of an individual artist or audience member.
This is an example of what Historical Thinking Skill used in this essay?