This study attempts to define distinctive attitudes and character traits found in American teenagers who have lived overseas in different locations for a considerable period of their lives. Such adolescents offer an extreme example of the risks and stresses of geographic relocation. Through the use of the Semantic Differential Technique and a sentence completion questionnaire, we compared the overseas adolescents with a group of high school students in the United States, matched with the overseas group for age, sex, socioeconomic status, and marital status of parents. Our findings suggest that the extent of geographic mobility, overseas residence, and sex significantly affect adolescent attitudes and personality patterns. The mobile overseas group reported less positive self concepts, greater insecurity about the future, less comfort and reliance on the support of interpersonal relationships, and less positive affect states.