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Sandrine Corvoisier

1 July 2001
The recent wave of mergers in the euro area raises the question, whether the increase in concentration has at least in part offset the increase in competition in European banking through deregulation. We test this question by estimating a simple Cournot model of bank pricing. We construct country and product specific measures of bank concentration and find that for loans and demand deposits, increasing concentration may have resulted in less competitive pricing by banks, whereas for savings and time deposits, the model is rejected, suggesting increases in contestability and/ or efficiency in these markets. These findings are robust across a wide variety of econometric specifications. Finally, the paper discusses some implications for tests of the effect of concentration on monetary policy transmission
JEL Code
L13 : Industrial Organization→Market Structure, Firm Strategy, and Market Performance→Oligopoly and Other Imperfect Markets
G21 : Financial Economics→Financial Institutions and Services→Banks, Depository Institutions, Micro Finance Institutions, Mortgages
B4 : History of Economic Thought, Methodology, and Heterodox Approaches→Economic Methodology
16 March 2005
In most OECD countries, we cannot reject up to three breaks in the mean of inflation: one break in the late 1960's-early 1970's, one in the early-mid 1980's and another break in the early 1990's. These breaks tend to be associated more often to breaks in the mean of nominal variables than to the one of real variables, which reinforces the view that they are monetary phenomena. We also show that ignoring breaks in the mean of inflation clearly lead to overrate inflation persistence in standard bi-variate models of inflation. The response of inflation to shocks in these models is markedly faster with breaks than without breaks. Finally, controlling for breaks in the mean of inflation weakens the effects on inflation of M3 growth and of the real unit labour cost towards insignificance while the effects of the output gaps on inflation are more robust.
JEL Code
E31 : Macroeconomics and Monetary Economics→Prices, Business Fluctuations, and Cycles→Price Level, Inflation, Deflation
E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
C32 : Mathematical and Quantitative Methods→Multiple or Simultaneous Equation Models, Multiple Variables→Time-Series Models, Dynamic Quantile Regressions, Dynamic Treatment Effect Models, Diffusion Processes
Eurosystem inflation persistence network