Mankiw speculates on the differences between Econ department economists and business school economists. Among his suggestions, self-selection by the faculty member, the kind of research rewarded in each place, and this remark about the focus of students:
Faculty who teach PhD students are used to being asked, “How did you derive that first-order condition? How can you prove that the equilibrium exists and is unique?” Faculty who teach MBA students are used to being asked, “Is that really how it works?”
I wonder how economists in law schools differ from economists in Econ departments and business schools?