Create or Destroy Values?
In Campbell, A. 2003. The Role of the Parent Company. The Oxford Handbook of Strategy:
Campbell presents stand-alone influence, linkage influence, central functions and services, and corporate development as the "Four Ways to Destroy Values" (p. 73)
He precises: "in each of these areas, it is possible for parent companies to create value. Often, however, these areas of influence do result in value destruction" (p. 73).
It's then probably neccessary to provide nuances in your abstract about the "four types of parental value creation". Otherwise, many scholars will affirm that these four strategies are the solution prescribed by Goold and Campbell to create value.