A study of children's developing attitudes toward their own and foreign countries is described. Children (ages 6 to 12) in England, Scotland, Austria, Belgium, and Greece were used as subjects. Information is included on (1) attitudes toward foreign countries, (2) affiliation with their own country, (3) perception of similarities and dissimilarities of foreign countries, (4) perception of relations between nationals of foreign countries, and (5) perception of similarities and dissimilarities to other groups as determinants of friendly or hostile behavior. (Author/AF)