The stochastic frontier analysis (Aigner et al., 1977, Meeusen and van de Broeck, 1977)is widely used to estimate individual efficiency scores. The basic idea lies in the introductionof an additive error term consisting of a noise and an inefficiency term. Most oftenthe assumption of a...

The question of whether or not mergers and acquisitions have helped to enhancebanks’ efficiency and profitability has not yet been conclusively resolved in theliterature. We argue that this is partly due to the severe methodological problemsinvolved. In this study, we analyze the effect of...