I want to know the answer to the following question:
What group has shifted the focus of research in identity?
All the background I'm provided with is that "In the same way as Barth, in his approach to ethnicity, advocated the critical focus for investigation as being "the ethnic boundary that defines the group rather than the cultural stuff that it encloses" (1969:15), social anthropologists such as Cohen and Bray have shifted the focus of analytical study from identity to the boundaries that are used for purposes of identification.". Is that enough to answer the question?
Answer: no