Structuralism critical theory focuses on individual text that it points to larger structures. Structuralism tries to identify the “underlying principles that govern their structure. The theorist aim to identify the structure and “conceptual framework”. The structuralism theorist focus on how the individual work reflects a larger structure that pervades literature or human experience. They believe that structures originate in the human brain. Structuralism critical theorist believe that the structure we have is a reflection of the way we think. The purpose of structuralism is to find  “index” of those structures into basic categories. Structuralist critical theorist focus on the sign and the signifier. They believe that the relationship between signifier and signified is arbitrary. Because of this, the meaning is assigned to the sign and the signifier through difference. One of the main assumptions language mediates and therefore creates our world. One of the structuralist critical theory is Claude Levi Strauss. Strauss looked at signs as rituals and myths. Strauss believed that signs and structural systems are govern by  human interaction. In regards to  structuralism within literature, critics are most concerned with narrative. The stories take on larger cultural meanings. Another theorist is Vladimir Propp, Propp argued that narratives can be reduced down to a few essential stories that we tell over and over and over again.