If you know you want to pursue a PhD, the best ways to demonstrate research relevance are:
- get a Research Assistantship during Masters, and if possible, get your name on a publication
- find a program with a Masters thesis option (our MBA at UMass-Boston has this)
- find a one year masters in management that is more theory/research based (mostly in UK, but some beginning to sprout in US too).
Remember, a PhD in business does not necessarily build on an MBA - here at UMass-Boston, the new PhD in Business Administration (Organizations and Social Change Track), is very happy to see applicants from Political science, sociology, psychology etc.
Best of luck!