Exposure is a segregation measure referring to the degree of potential contact, or the possibility of interaction, between group members of two racial groups within the average neighborhood of a metro area. For instance, the white-black exposure index provides the average proportion of neighbors that are black, for the average neighborhood where whites live. The first group listed is exposed to the second group listed. When the racial groups are the same (black-black exposure), this is same-group exposure, or isolation. In this example, it means that the average black person lives in a neighborhood where X proportion of his/her neighbors are black.
Children defined as those under age 18. Racial groups refer to people who indicated they were of specified race
"alone." Excludes those specifying two or more races. Indices in metro
areas with small numbers of specified racial/ethnic groups should be
used with caution.
U.S. Census Bureau, 2000 Census, Summary File 1 and 2010 Redistricting File.