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But where do our prediction come from? Communicative predictions are based on data from three levels. First is the cultural level. This level involves information about the other's culture, its dominant values and norms. This is often the only level of information available when communicating with a stranger. Even so, a better understanding of the stranger's culture yields better predictions. The second level of information is sociocultural. This includes data about the other's group membership, or the groups to which they seek to belong. This type of information is the predominant data used in intracultural communication. Finally there is psychocultural data. This is information about the individual's characteristics, and is the sort of data most relevant to communication with friends. Then, how do we process the prediction data when we communicate with strangers? The answer is that we understand such data by the process of social cognition. Social cognition is a dialectical process which involves both grouping particulars into categories based on their similarities, and of distinguish individuals from their categories based on their differences.