interest margins. This study examines the connection between bank size and efficiency to understand whether that relationship …, more efficient, and unchallenged. In contrast, several studies found that when bank size increases beyond certain …-overlapping thresholds for bank size. We found two key results. First, bank size increases bank interest rate margins with an inverted U …

-based causal relationship between banks' cost efficiency and competition via data envelope analysis (DEA) using the generalized … causality between competition and cost efficiency (higher efficiency results in a higher level of competition). The DEA results … relationship between the previous year's cost efficiency Granger value, the greater availability, and the lower prices of banking …

competition is greater for healthy banks than for fragile ones. Our results suggest that efficiency is the conduit through which …