The study examines the relationship between the consequential social cost of market power (i.e., welfare performance of banks) and cost efficiency using data covering the period 2009 to 2017 from the Ghanaian banking industry. The study adopts the Ordinary Least Squares (OLS), Fixed Effect (FE)...

Purpose: The study examines the relationship between the consequential social cost of market power (i.e. welfare performance of banks) and cost efficiency using data covering the period 2009 to 2017 from the Ghanaian banking industry. Design/methodology/approach: The study adopts the ordinary...