Former Sociology Ph.D. candidate here. Yes, a lot of b-school research crosses fields. I've worked with b-school profs doing work across sociology, economics,

Former Sociology Ph.D. candidate here. Yes, a lot of b-school research crosses fields. I've worked with b-school profs doing work across sociology, economics, law (to a lesser degree), computer science, and mathematics. The difference between research in those fields and b-school research seems to be that the b-school profs had more of an applied bent. The b-school research was more motivated by practical business problems. Of course, much like programs within a discipline can be radically different from university to university, I imagine there's also a range of research styles across b-schools.