:: How different theories approach these 'domain questions' will reveal something of the core ontological and epistemological claims of each theory. Recall that there is not a single 'theory of globalization' but many theoretical discourses. These tend to be grounded in broader theoretical traditions and perspectives, such as Marxism, Weberianism, functionalism, postmodernism, critical and feminist theory, and involve a number of distinct approaches to social inquiry, such as cultural studies, international relations, post-colonial studies, literature and so on. However, most theories draw on the distinctive contributions and traditions of multiple disciplines. Indeed, one of the most refreshing hallmarks of globalization studies is its interdisciplinary — nay, transdisciplinary — character; a renewed holistic approach to the study of social structure and change. The traditional borders between disciplines have become blurred in both theories and empirical studies on globalization. Rather than propose a classification of globalization theories I identify here a variety of theoretical discourses that typically serve as heuristic tools in concrete globalization studies. The focus is on key theories and theorists that have already —or are likely to — become markers across social sciences disciplines and humanities for the field of globalization studies. What follows is not a comprehensive review of extant theories, which would be impossible here, but a limited selection intended to provide a view of the range of theoretical discourse on which scholars researching globalization are likely to draw.