James Fowler's theory that personal faith develops through a series of stages has implications for the ways in which people view members of ingroups and outgroups. Those implications were tested in a survey of college students that measured their faith stage and asked a series of questions concerning five college applicants who varied in their religious orientations. As predicted, respondents in earlier stages gave more positive ratings to religiously similar others than to religiously different others. Respondents in later stages did not rate similar and dissimilar others significantly differently. The most significant difference was between those who selected only responses that reflected Fowler's Stages Four and Five and those who even once selected responses that reflected Stages Two or Three. The implications of this apparent threshold effect and the use of surveys in faith stage research are discussed. James Fowler's recent book, Stages of Faith (1981), outlines his psychosocial theory of the development of personal faith across the life span. He defines faith, broadly, as the primary motivation of one's life. Faith, in this sense, does not depend upon religious supports or assent to credal statements. However, because religious groups exist in part to help give answers to life's ultimate questions, faith and religion often are intertwined and the faith of many people is grounded in religious beliefs and behaviors. Fowler's goal for a decade has been to chart faith development throughout the life span, characterizing common faith stages and the transitions that separate them (Fowler and Keen, 1976; Fowler, 1980, 1981). We have examined the implications of the faith stages for an important and related variable, perceptions of members of various outgroups. The faith development of college students was measured, and their faith stage was used to understand their attitudes toward similar and dissimilar others.