“…Given this interorganizational focus, prior models have usually made certain simplifying assumptions about the homogeneity of diffusing practices across time and space, treating them as essentially invariant rather than mutating. This approach, while parsimonious, has led to a relative neglect of theoretical attention to practice variation at the organization level (Cool, Dierickx, & Szulanski, 1997), with little attention to issues of adaptation and internal variety in diffusing practices as they wind their way through organizations (e.g., Mamman, 2002;O'Mahoney, 2007).…”