Laurent Weill

Bio: Laurent Weill is an academic researcher from EM Strasbourg Business School. The author has contributed to research in topics: Loan & Competition (economics). The author has an hindex of 49, co-authored 232 publications receiving 7899 citations. Previous affiliations of Laurent Weill include University of Strasbourg & Charles University in Prague.

Banking efficiency in transition economies

Abstract: An increasing share of the banking sector is controlled by foreign capital in the majority of transition countries. To analyse the effects of this trend on the performance of the banking sector in these countries, this study conducts a comparative analysis of the performance of foreign-owned and domestic-owned banks operating in the Czech Republic and Poland. We use the stochastic frontier approach to compute cost efficiency scores. Following Mester (1996), financial capital is included in the cost frontier model to control for risk preferences. Our finding is that on average foreign-owned banks are more efficient than domestic-owned banks. We conclude, however, that this advantage does not result from differences in the scale of operations or the structure of activities.

Is corruption an efficient grease

Abstract: This paper tests whether corruption can be viewed as an efficient grease in the wheels of an otherwise deficient institutional framework. It does so by analyzing the interaction between aggregate efficiency, corruption, and other dimensions of governance for a panel of 54 countries both developed and developing. Using three measures of corruption and five measures of other aspects of governance, we repeatedly observe that corruption is always detrimental in countries where institutions are effective, but that it may be positively associated with efficiency in countries where institutions are ineffective. We thus find evidence of the grease the wheels hypothesis.

Is Corruption an Efficient Grease

Abstract: This paper tests whether corruption may act as an efficient grease for the wheels of an otherwise deficient institutional framework. We analyze the interaction between aggregate efficiency, corruption, and other dimensions of governance for a panel of 54 developed and developing countries. Using three measures of corruption and five measures of other aspects of governance, we observe that corruption is consistently detrimental in countries where institutions are effective, but that it may be positively associated with efficiency in countries where institutions are ineffective. We thus find evidence of the grease the wheels hypothesis.

Regression Diagnostics: Identifying Influential Data and Sources of Collinearity

Abstract: 1. Introduction and Overview. 2. Detecting Influential Observations and Outliers. 3. Detecting and Assessing Collinearity. 4. Applications and Remedies. 5. Research Issues and Directions for Extensions. Bibliography. Author Index. Subject Index.

Estimation and Inference in Econometrics

Abstract: Offering a unifying theoretical perspective not readily available in any other text, this innovative guide to econometrics uses simple geometrical arguments to develop students' intuitive understanding of basic and advanced topics, emphasizing throughout the practical applications of modern theory and nonlinear techniques of estimation. One theme of the text is the use of artificial regressions for estimation, reference, and specification testing of nonlinear models, including diagnostic tests for parameter constancy, serial correlation, heteroscedasticity, and other types of mis-specification. Explaining how estimates can be obtained and tests can be carried out, the authors go beyond a mere algebraic description to one that can be easily translated into the commands of a standard econometric software package. Covering an unprecedented range of problems with a consistent emphasis on those that arise in applied work, this accessible and coherent guide to the most vital topics in econometrics today is indispensable for advanced students of econometrics and students of statistics interested in regression and related topics. It will also suit practising econometricians who want to update their skills. Flexibly designed to accommodate a variety of course levels, it offers both complete coverage of the basic material and separate chapters on areas of specialized interest.