Ethnocentrism is the belief in one's own culture's superiority. It is the outcome of criticizing other civilizations based on your own cultural values. Ethnocentrism is associated with cultural blindspots. They serve as social codes, guiding people's behavior as they attempt to fit in and prosper in a certain cultural setting. Cultural blindspots are factors that potentially influence an individual to make unfavorable judgments about others based on their cultures rather than their personal traits. Cultural diversity is the state or condition of being diverse or varied in culture. It can be used as an adjective to describe different things or people from different backgrounds or nations who live or have lived on earth, such as ethnic groups or religions. Or it can be used as a noun to refer to these groups of people themselves - the diverse cultures of the world. Diversity has many positive effects on society. Education research has shown that students learn more effectively when taught by teachers from different cultures or backgrounds themselves. This is called "cross-cultural education." Students also benefit from a range of perspectives within a single class. This is called "bicultural education." Finally, diversity is important for the health of social systems. Different ways of thinking and acting help prevent problems from arising in the first place. And when problems do arise, they offer possible solutions that take into account different points of view. However, diversity can also have negative effects on society.