Fredrik Barth

Published in 1969, Barth's edited volume "Ethnic Groups and Boundaries" argued that ethnic identities are not fixed cultural essences but are actively maintained through ongoing social boundary-making. The book revolutionized the study of ethnicity by shifting the focus from what groups "are" to how the boundaries between them are constructed and sustained.

Barth conducted ethnographic fieldwork across a striking range of locations, including among the Basseri nomads of Iran, the Swat Pathans in Pakistan, and communities in Kurdistan, Bali, and New Guinea. His comparative breadth was unusual and informed his flexible, transactional approach to social organization.

Barth was a longtime professor at the University of Bergen in Norway, where he helped build a distinctive Scandinavian school of social anthropology. He later held positions at several other universities, including in the United States.

Barth proposed a transactional theory of ethnicity, arguing that ethnic identity is produced and reproduced through social interaction rather than being determined by shared culture or descent. This approach fundamentally reshaped how anthropologists and sociologists understand the fluidity and persistence of ethnic boundaries.