This monograph consists of six chapters which discuss the problem of prejudice in our society. Chapter I looks at "Prejudice as a Social Problem." As a social problem prejudice can be defined exclusively in terms of human behavior which denies or attempts to deny equality of opportunity or status to certain racial, religious, or ethnic groups. Prejudiced behavior treats individuals as though they were not individuals at all but, rather, indistinguishable parts of a classified group. "The Shifting Nature of Prejudice" is discussed in Chapter II. Prejudiced attitudes do not predetermine prejudiced behavior. An individual's prejudiced behavior may be determined more by the social situation at any given moment than by his pre-existing attitudes. Chapter III "Learning Prejudice" points out that the learning of prejudice is effected primarily by the kinds of social situations in which people live. Chapter IV "The Prejudiced Community" discusses how the pattern of community practices is the fountainhead of prejudice. The growing child learns his social behavior primarily by following the modes and models of behavior around him. "Family and Group Influences in the Prejudiced Community" is the topic of Chapter V. The complex of prejudicial practices within a community provides the family and other traditional groups with the "frame of reference" which perpetuates these practices and sustains prejudice. "Some Implications for Action" is the topic of the concluding chapter. The custom of prejudice may be changed through remedial social action. Various channels of social action such as the law, direct action, mass media, the schools, and community groups may help to effect this change. In addition, the individual must examine and attempt to understand his own behavior and attitudes. (Author/RM)