“…The specific items used to assess each party's level of dependence (see Appendix B) were adaptations of items used in prior studies of inter-organizational dependence (Frazier and Rody 1991, Gulati and Sytch 2007, Kumar et al 1998 to represent the concentration of the exchange, the availability of alternatives, and the level of relationship-specific investments. Several prior studies have modeled inter-organizational dependence as a formative rather than a reflective construct (e.g., El-Ansary and Stern 1972, Frazier et al 1989, Howell 1987, Kumar et al 1998), and we follow this precedent. In deciding whether to model a construct as reflective or formative, it is advised that researchers ask two related questions (Bollen 2011, Bollen and Lennox 1991, Diamantopoulos and Winklhofer 2001, MacCallum and Browne 1993: (i) Do the indicators (i.e., items) represent a unidimensional concept?…”