x efficiency in australian banking an empirical investigation this paper empirically investigates the x eaciency technical and allocative in australian banks a non parametric method of data envelopment analysis dea has been used to arrive at the eaciency scores banks in this sample were found to have low levels of overall eaciency compared with the banks in the european countries and in the us the results indicate that as a source of overall ineaciency the technical component was more important than the allocative component thus the ineaciency in australian banks can be attributed to wasting of inputs technical ineaciency rather than choosing the incorrect input combinations allocative ineaciency domestic banks were found to be more eacient than foreign owned banks the study has important implications such as guiding the government policy regarding deregulation and mergers since the study pinpoints the sources of ineaciency it would also help banks with strategic planning 2001 elsevier science b v all rights reserved

banking technology and the existence of a consistent output aggregate abstract this paper addresses the question of the existence of a consistent output aggregate in banking specific necessary and sufficient conditions for output aggregation are developed and tested in the context of a second order approximation to any arbitrary multi product bank cost function the analysis provides evidence that a composite aggregate measure of output fails to provide a proper representation of banking technology and therefore previous studies that used aggregate output measures may well be subject to specification errors

efficiency analysis in banking firms an international comparison abstract the intensive process of financial european integration together with the profound transformation and deregulation that has taken place in the spanish banking system justifies the evaluation of its efficiency in comparison with that of other banking systems in this context the aim of this study is to analyze the productivity efficiency and differences in technology of several banking systems using a non parametric approach together with the malmquist index we compare the efficiency productivity and differences in technology of different european and us banking systems for the year 1992

the tale of two research communities the diffusion of research on productive efficiency abstract the field of theoretical and applied efficiency analysis is pursued both by economists and people from operational research and management science each group tends to cite a different paper as the seminal one recent availability of extensive electronically accessible databases of journal articles makes studies of the diffusion of papers through citations possible research strands inspired by the seminal paper within economics are identified and followed by citation analysis during the 20 year period before the operations research paper was published the first decade of the operations research paper is studied in a similar way and emerging differences in diffusion patterns are pointed out main factors influencing citations apart from the quality of the research contribution are reputation of journal reputation of author number of close followers colleagues cadres of proteges ph d students and extent of network invisible college such factors are revealed by the citing papers in spite of increasing cross contacts between economics and operations research the last decades co citation analysis reveals a relative constant tendency to stick to own camp references

an index number approach to measuring bank efficiency an application to mergers abstract the current wave of bank mergers has resulted in an interest in the measurement of consequent efficiencies previous studies have generally focused on the measurement of merger induced cost efficiencies in this paper we turn to the production side and examine the change in relative productivity arising from bank mergers after deriving our superlative multilateral productivity index we compute the indexes for our entire sample of banks approximately 2 000 banks in each of the years 1984 1988 and for a cohort of 160 banks that merged in 1986 we find that acquiring banks achieve no gains in efficiency and this finding supports those of other studies on the other hand we find that our acquiring banks are consistently more productive than the sample as a whole by implication if mergers can be generally characterized as the acquisition by a relatively more productive bank of a relatively less productive bank an empirically valid supposition then industry performance should improve as a result of these mergers

bias in malmquist index and cost function productivity measurement in banking this paper illustrates how many prior studies ofproductivity growth in the banking industry have been overstated this occurs with both dea malmquist index and parametric stochastic cost frontier productivity measurement approaches the problem is not due to the technique used but in how it is applied it is easiest to see in the banking industry due the nature ofthe data available the bias is eliminated when all outputs and inputs are included in the analysis ensuring that the balance sheet restriction is met although simple in concept this problem and its solution have so far been neglected in the literature r 2002 elsevier science b v all rights reserved

identifying determinants of branch performances in agricultural bank of china a spatial econometric approach this paper identifies determinants of branches performances in agricultural bank of china using the spatial econometric approach studies on changes of spatial patterns of a financial industry are scarce especially at the branch level this paper is the first attempt to take spatial interdependence and urbanisation effects into account to investigate the determinants of china s bank branches performances from 1997 to 2011 we have chosen the world s 10th largest bank the agricultural bank of china because it discloses the most complete panel data of all empirical evidence indicates that spatial effects and urbanisation have large statistically significant impacts on branches performances it highly and positively corresponds to tertiary industry output domestic consumption and urbanisation this signals that the abc has evolved from a state owned specialised bank to a listed commercial bank

technical and environmental efficiencies and best management practices in agriculture an input distance function idf is estimated to empirically evaluate and analyse the technical and environmental efficiencies of 210 farms located in the chaudiere watershed quebec where water quality problems are particularly acute because of the production of undesirable outputs that are jointly produced with agricultural products the true idf is approximated by a flexible translog functional form estimated using a full information maximum likelihood method technical and environmental efficiencies are disaggregated across farms and account for spatial variations our results show that there is a significant correlation between the two efficiencies the idf is used to compute the cumulative malmquist productivity index and the fisher index the two indices are used to measure changes in technology profitability efficiency and productivity in response to the adoption of two selected best management practices bmps whose objective is to reduce water pollution we found significant differences acro

a variance ratio test of random walks in foreign exchange rates the separate variance ratio tests under homoscedasticity and heteroscedasticity both provide evidence rejecting the random walk hypothesis using five pairs of weekly nominal exchange rate series over the period from august 7 1974 to march 29 1989 the rejections cast doubt on the random walk hypothesis in exchange rates which has received support in the existing literature furthermore since the rejections are robust to heteroscedasticity they suggest autocorelations of weekly increments in the nominal exchange rate series which may be consistent with the exchange rate overshooting or undershooting phenomenon in the past decade there has been a consensus that nominal exchange rates follow a random walk process since a unit root and uncorrelated increments are both required for a random walk process the random walk is usually supported in the existing literature either because a unit root component is detected in the exchange rate series or because the increment in the exchange rate is found to be serially uncorrelated for example meese and singleton 1982 and baillie and bollerslev 1989 both find a unit root component in the exchange rate series and the evidence provided in giddy and dufey 1975 cornell and dietrich 1978 logue sweeney and willett 1978 and hsieh 1988 all suggest that the exchange rate series contains uncorrelated increments in this paper the random walk hypothesis for the nominal exchange rate series is reexamined by applying a variance ratio test developed in lo and mackinlay 1988 to five pairs of weekly nominal exchange rate series over the period from august 7 1974 to march 29 1989 while there are two implications of the random walk unit root and uncorrelated increments this paper focuses on the uncorrelated increments aspect this is not only because there are some important departures from the random walk that unit root test cannot detect but also because the autocorrelation aspect may yield

do people understand monetary policy abstract we combine questions from the michigan survey about future inflation unemployment and interest rates to investigate whether households are aware of the basic features of u s monetary policy our findings provide evidence that some households form their expectations in a way that is consistent with a taylor 1993 type rule we also document a large degree of variation in the pattern of responses over the business cycle in particular the negative relationship between unemployment and interest rates that is apparent in the data only shows up in households answers during periods of labor market weakness

dea and sfa research on the efficiency of microfinance institutions a meta analysis microfinance has played a key role in the fight against exclusion and the promotion of entrepreneurship in developing countries an important question today is how to increase the reach and profitability of microfinance in a context where subsidies are withdrawing to promote the viability and sustainability of microfinance institutions mfis efficiency analysis has found favor in this context and has attracted growing interest among professionals partners and researchers abundant empirical work has been conducted over the last ten years on this subject in very different contexts and with different methodologies the purpose of this article is to provide a meta regression analysis on parametric and nonparametric estimations of mean technical efficiency mte in microfinance using a data set of 262 observations from 38 studies the results show that in the microfinance industry mte scores have increased over time however with an mte rate of approximately 61 1 there is room for improving efficiency mfis use more resources than necessary for the results achieved in terms of outreach and revenue generated our results show heterogeneity of mte according to the methodological approach of the studies studies with a larger number of variables inputs and outputs produced higher mte scores than did those with a smaller number of variables studies using the variable returns to scale assumption resulted in higher mte scores than those using constant returns to scale in addition those with a production approach had higher mtes than did those using the intermediation approach while studies of a large number of mfis had lower scores than did those involving a small sample size moreover research estimating social efficiency generated lower mtes compared to those estimating financial efficiency studies using data from african mfis obtained lower mtes than did those on mfis in latin america and mena which confirms the poor performance of african microfinance

technical efficiency and scale efficiency in the italian banking sector a non parametric approach measures of technical and scale efficiencies are derived in the italian banking industries by implementing non parametric data envelopment analysis on a cross section of 174 italian banks taken in 1991 the methodology of the parametric and non parametric approaches to measure efficiency are discussed the existence of both technical and allocative efficiency is established this result is robust to modifications in the specification of inputs and outputs suggested by the intermediation approach and by the asset approach in implementing both the intermediation and the asset approach the traditional specification of inputs is modified to allow an explicit role for financial capital in addition regression analysis is used on a bank specific measure of inefficiency to investigate determinants of banks efficiency efficiency is best explained by productive specialization size and to a lesser extent by location

the dominance of inefficiencies over scale and product mix economies in banking abstract this study measures and analyzes inefficiencies for all u s banks in 1984 inefficiencies are measured relative to a thick frontier cost function and are found to dominate measured scale and product mix economies most inefficiencies are operational in nature involving the overuse of physical inputs rather than financial involving overpayment of interest also technical inefficiencies proportionate overuse of all inputs dominate allocative inefficiencies improper mix of inputs these results suggest that competitive pressures in banking from deregulation will be focused primarily on banks that do not control costs rather than on those of a particular size or product mix

inflation expectations and firm decisions new causal evidence author s coibion o gorodnichenko y ropele t abstract 2019 the author s we use a unique design feature of a survey of italian firms to study the causal effect of inflation expectations on firms economic decisions in the survey a randomly chosen subset of firms is repeatedly treated with information about recent inflation whereas other firms are not this information treatment generates exogenous variation in inflation expectations we find that higher inflation expectations on the part of firms leads them to raise their prices increase demand for credit and reduce their employment and capital however when policy rates are constrained by the effective lower bound demand effects are stronger leading firms to raise their prices more and no longer reduce their employment

university library benchmarking an international comparison using dea abstract this paper proposes a framework for assessing the technical efficiency of 118 university libraries from australia austria canada germany switzerland and the united states the flexible non parametric approach of data envelopment analysis has been chosen to analyse the performance differentials of university libraries we also investigate whether the institutional settings affect the degree of library efficiency the findings of the intercountry efficiency comparison revealed that almost one third of the university libraries are technically efficient using environment specific frontiers to distinguish differences in managerial efficiency from differences in environmental efficiency we found considerable differences in technical efficiency between european and non european university libraries however as regards the environmental setting the non european best practice frontier outperforms the european best practice frontier

a multivariate analysis of forecast disagreement confronting models of disagreement with survey data abstract this paper documents multivariate forecast disagreement among professional forecasters and discusses implications for models of heterogeneous expectation formation disagreement varies over time and is positively correlated with general economic uncertainty the degree to which individual forecasters disagree with the average forecast tends to persist over time models of heterogeneous expectation formation can be modified by introducing heterogeneous signal to noise ratios to match this feature furthermore disagreement about correlations of different macroeconomic variables is high on average in general multivariate forecast data can be used more effectively than it has been to estimate models with heterogeneous expectations and to test the mechanisms used to generate disagreement in these models

industry performance and structural efficiency measures solutions to problems in firm models abstract it is shown that average unit structural efficiency measures do not measure the level of technical efficiency in a firm model of an industry alternative structural efficiency measures generalized to multiple input and multiple output technologies are presented as a solution to the problem of how to estimate the relative performance of an industry as a whole where reallocation of inputs across firms is not feasible compared to existing measures the proposed measures require additional information therefore the linear programming dea models needed to obtain this information are presented this non parametric approach to relative efficiency measurement is also used to obtain economic efficiency estimates for an industry as a whole without imposing a priori restrictions on the relative input and output weights

the technical efficiency of us banks abstract the paper uses a non parametric frontier approach to measure the technical efficiency of a sample of u s banks the results indicate that these banks could have produced the same level of output with only 70 of the inputs actually used in addition most of this inefficiency is due to pure technical inefficiency wasting inputs rather than scale inefficiency operating at non constant returns to scale finally regression analysis indicates that the technical efficiency of the banks is positively related to size negatively related to product diversity and not at all related to the extent to which branch banking is allowed

efficiency measures and productivity indexes in the context of university library benchmarking data envelopment analysis dea has attracted considerable attention during the last few decades as an intuitively clear method for performance assessment theoretical developments have taken turns with empirical efficiency studies in this paper we empirically analyse performance differences across university libraries from different countries from a cross section and a longitudinal perspective we use the malmquist index approach to disentangle environmental efficiency from technical efficiency te to highlight performance differences eventually induced by environmental factors beyond the control of library management as well as to decompose productivity changes over time into changes in te and changes in technology in our cross section analysis we found that north american na libraries are more productive at higher input levels than the european libraries from germany and austria at which we looked in this contribution moreover the largest na libraries are still able to improve performance as t

comparing school ownership performance using a pseudo panel database a malmquist type index approach in this paper we propose a different way of using the malmquist index that allows us to further analyze the relative performance divergences between two groups of decision making units dmus over time when only a pseudo panel database is available to do this we extend the camanho and dyson 2006 one period malmquist type index cdmi for a pseudo panel database with a new pseudo panel malmquist index ppmi to illustrate the methodology we apply it to examine how the performance gap between public and private government dependent secondary schools in the basque country spain performed across three pisa waves 2006 2009 and 2012 the results suggest that performance is persistently and significantly higher for private government dependent schools than for public schools

why do forecasters disagree lessons from the term structure of cross sectional dispersion abstract key sources of disagreement among economic forecasters are identified by using data on cross sectional dispersion in forecasters long and short run predictions of macroeconomic variables dispersion among forecasters is highest at long horizons where private information is of limited value and lower at short forecast horizons moreover differences in views persist through time such differences in opinion cannot be explained by differences in information sets our results indicate they stem from heterogeneity in priors or models differences in opinion move countercyclically with heterogeneity being strongest during recessions where forecasters appear to place greater weight on their prior beliefs

the productivity of financial intermediation and the technology of financial product management financial intermediaries banks thrifts and life insurance companies have experienced low productivity over the last decade or two low productivity has manifested itself as a declining market share of their products relative to capital market assets in some cases low productivity caused a failure to meet contractual obligations embodied in their financial products these failures resulted in customer losses and or taxpayer losses when failed intermediaries were guaranteed by government agencies this productivity problem has been analyzed mostly from an economic science perspective by r c merton merton r c 1990 the financial system and economic performance j fin serv res 263 300 and z bodie bodie z 1990 pension funds and financial innovation finan mgmt autumn the focus of the economic analysis is the improvement of regulatory measures for intermediaries whose financial products are guaranteed by government agencies in this paper we take a management science perspective by

inflation bets on the long bond the liquidity premium theory of interest rates predicts that the treasury yield curve steepens with inflation uncertainty as investors demand larger risk premiums to hold long term bonds by using the dispersion of inflation forecasts to measure this uncertainty we find the opposite since the prices of long term bonds move more with inflation than short term ones investors also disagree and speculate more about long maturity payoffs with greater uncertainty shorting frictions measured by using treasury lending fees then lead long maturities to become overpriced and the yield curve to flatten we estimate this inflation betting effect using time variation in inflation disagreement and treasury supply

malmquist indices of productivity growth during the deregulation of norwegian banking 1980 89 productivity growth during the deregulation of the norwegian banking industry is studied within the framework of data envelopment analysis which explicitly allows for multiple outputs introducing malmquist indices for productivity growth total growth can be decomposed into frontier growth and change in each bank s distance to the frontier both the total growth index and its components can be consistently chained over time we find productivity regress at the average bank prior to the deregulation but rapid growth when deregulation took place deregulation also led to less dispersion of productivity levels within the industry

an application of variance ratio test to the korean securities market abstract the efficient market hypothesis emh has recently been under attack as a result of the methodology employed in the early tests of the theory more recent evidence has shown that the traditional tests of random walks are susceptible to errors because of spurious autocorrelation induced by non synchronous trading which is characteristic of stock markets in developing countries this is the first study to apply the recently introduced lo mackinlay variance ratio test to the korean stock exchange kse the kse is chosen because it represents a typical emerging stock market the results show that under the assumption of homoscedastic error term the random walk hypothesis is rejected however with heteroscedastic stochastic disturbance term we could not reject the hypothesis of random walk for daily data when the test is applied to longer horizons such as weekly monthly 60 day and 90 day interval data we could not reject the random walk hypothesis there is also evidence that suggests the presence of spurious autocorrelation and heteroscedasticity in the market these could be due to official intervention and nonsynchronous trading in the market

the effects of shared atm networks on the efficiency of turkish banks this study investigates whether forming shared atm networks has yielded positive benefits for banks in turkey by increasing their productive efficiency using a data envelopment analysis dea approach pure technical and scale efficiency scores of turkish banks are estimated and analysed for the period 2000 2003 the results suggest that although it is possible to realize positive effects through atm sharing arrangements there are multiple factors that determine which banks realize such benefits the geographical distribution of shared atms between urban and rural markets and the level of competition between banks within urban areas are shown to be important determinants of differences in bank efficiency this discrepancy between the gains associated with atm sharing may have important implications concerning the adoption and sharing of new technology by banks in developing countries

updating inflation expectations evidence from micro data utilizing the michigan household consumer survey s rotating panel microstructure we can identify if individuals have adjusted their expectations towards inflation this allows us to directly capture the updating behavior of individual consumers regarding their short and long run inflation expectations

efficiency tests in the french derivatives market abstract the french derivatives market the marche a terme international de france matif or the french international futures and options exchange is one of the major derivatives markets in the world the efficiency of four financial contracts traded on the matif cac40 index futures ecu bond futures national bond futures and pibor 3 month futures are examined in this paper test results from serial correlations unit root tests and variance ratio tests provide overwhelming evidence that the random walk hypothesis cannot be rejected for these contracts

some evidence of random walk behavior of euro exchange rates using ranks and signs abstract this study utilises recently developed tests based on ranks and signs in addition to the traditional variance ratio test to examine the behavior of euro exchange rates we show that adjustments for multiple tests must be employed in order to avoid size distortions overall such adjustments provide evidence consistent with random walk behavior of euro exchange rates

technical scale and allocative efficiencies in u s banking an empirical investigation a nonparametric frontier approach is used to calculate the overall technical pure technical allocative and scale efficiencies for a sample of 322 independent banks the sample was drawn from the federal deposit insurance corporation tapes on the reports of condition and reports of income call reports for the year 1986 the results indicated a low level of overall efficiency the main source of inefficiency was technical in nature rather than allocative separate efficiency frontiers were constructed to test the effect of branching however the distributions of efficiency measures for branching and non branching banks were not found to be different

the role of media for inflation forecast disagreement of households and professional forecasters this paper investigates the effects of media coverage about consumer price inflation on inflation forecast disagreement of german households and professional forecasters we adopt a bayesian learning model in which media coverage of inflation affects forecast disagreement by influencing information sets as well as predictor choice our empirical results show that disagreement of households depends on the heterogeneity of story content and on the reporting intensity especially of news on rising inflation disagreement of professional forecasters does not depend on media coverage with respect to the influence of macroeconomic variables we provide evidence that disagreement of professional forecasters primarily depends on the inflation rate and on inflation volatility the response of households to inflation is much less pronounced

cross country comparisons of efficiency evidence from the uk and italian investment firms abstract this paper compares and reconciles two new methods for cross country comparisons of the cost efficiency of uk and italian investment firms over the period 1995 1998 it employs four different specifications of the stochastic frontier methodology using a translog cost function in order to measure x efficiency the traditional common frontier reveals that italian investment firms are nearly as efficient as uk firms to overcome traditional limitations two methods are used in this paper they provide consistent results the first method shows differences between the efficiency of the two countries by incorporating environmental variables into the cross country common frontier the second method shows differences in the efficiency of the domestic versus foreign investment firms in the two countries by testing the ability to monitor and control on a cross border basis finally to identify investment firms that are both cost and profit efficient we undertake a profitability test

banking efficiency in the nordic countries abstract evidence of the relative competitiveness of the banking industries in three nordic countries is provided by applying data envelopment analysis of productivity on the national and the pooled data sets the analysis produces a detailed account of how well banks from different countries and different sizes may be prepared to meet the more intense competition of a common european banking market

disagreement a la taylor evidence from survey microdata there is a growing interest in studying the disagreement of economic agents most studies however focus on the disagreement regarding one specific variable hereby neglecting that disagreement may be comoving with disagreement on other variables in this paper we explore to which extent disagreement regarding the interest rate is driven by disagreement on inflation and on unemployment this relationship can be motivated by the existence of the taylor rule using micro survey data for both professional forecasters and consumers we provide evidence that disagreement on the future interest rate is mainly driven by disagreement on inflation exploring further determinants we confirm that central bank transparency as well as news on money and credit conditions significantly influence disagreement

dea ar profit ratios and sensitivity of 100 large u s banks abstract several important dea ar concepts were applied here to banking for the first time this application includes classification sensitivity uniqueness linked cones lcs and profit ratios notably large bank behavior seems to be explained better by profit ratios than by relative efficiency measures of dea efficiency ar efficiency and lc profit ratios were made for a bank panel of the u s s 100 largest banks in asset size from 1986 to 1991 high levels of inefficiency were found as in previous studies classification of the dea efficiency measures identified the inefficient dmus with some positive primal slacks sensitivity analysis of the dea efficiency measures showed that the extreme efficient classification was generally relatively insensitive to errors in the data the ars eliminated i 44 to 60 of the dea extreme efficient dmus and ii all of the banks with unprofitable actual profit ratios some statistical analyses highlight the superiority of the lc profit ratios relative to the ar efficiency measures

is there a single frontier in a single european banking market abstract this paper attempts to estimate comparable efficiency scores for european banks operating in the single market in the eu using a data set of more than 5000 large commercial banks from all major european banking markets over the period 1993 2004 the application of meta frontiers enables us to assess the existence of a single and integrated european banking market we find evidence in favor of a single european banking market characterized by cost and profit meta frontiers however compared to the meta frontier estimations pooled frontier estimations tend to underestimate efficiency levels and correlate poorly with country specific frontier efficiency ranks

intertemporal efficiency analysis of sales teams of a bank stochastic semi nonparametric approach abstract the primary role of a bank branch is evolving from a service provider towards a sales channel previous branch level studies of sales efficiency consider a static setting of a single time period ignoring the stochastic nature of sales outcomes in this paper we examine efficiency and performance of sales teams in a bank branch network over time taking into account the changing demand and operational conditions as well as random disturbances the intertemporal sales frontier is estimated from the panel of monthly data over the years 2007 2010 using the stochastic semi nonparametric envelopment of data stoned method the efficiency scores of sales teams and the trajectories of performance over time allow managers and the sales force to learn from past events and to develop the managerial and work practices across the network while this study focuses on the case of a specific bank some of the innovative features of our approach are applicable to sales efficiency assessment in other banks and financial institutions as well as other network based sales organizations

deregulation ownership and productivity growth in the banking industry evidence from india this paper analyzes the relationship between deregulation and total factor productivity tfp growth in the indian banking industry using a generalized shadow cost function approach tfp growth is decomposed into a technological change a scale and a miscellaneous component a disaggregated panel data analysis using the population of public and private banks over 1985 96 that covers both pre and post deregulation periods indicates that a significant decline in regulatory distortions and the anticipated increase in tfp growth have not yet materialized following deregulation while private sector banks have improved their performance mainly due to the freedom to expand output public sector banks have not responded well to the deregulation measures

deregulation and productivity decline the case of spanish savings banks abstract during the 1980s many regulatory constraints limiting competition in spanish banking were relaxed or removed although deregulation came later to savings banks than to the rest of the banking sector two consequences of partial deregulation of savings banks have been a rapid growth in branching activity much of it geographically dispersed and a burst of merger activity in this paper we investigate productive efficiency and total factor productivity change in spanish savings banks over the 1986 1991 post deregulation period neither branching nor mergers provide an adequate explanation for the magnitude or the nature of the productivity decline we observe over the period

malmquist type indices in the presence of negative data an application to bank branches in this paper we develop an index and an indicator of productivity change that can be used with negative data for that purpose the range directional model rdm a particular case of the directional distance function is used for computing efficiency in the presence of negative data we use rdm efficiency measures to arrive at a malmquist type index which can reflect productivity change and we use rdm inefficiency measures to arrive at a luenberger productivity indicator and relate the two the productivity index and indicator are developed relative to a fixed meta technology and so they are referred to as a meta malmquist index and meta luenberger indicator we also address the fact that vrs technologies are used for computing the productivity index and indicator a requirement under negative data which raises issues relating to the interpretability of the index we illustrate how the meta malmquist index can be used not only for comparing the performance of a unit in two time periods but also for comparing the performance of two different units at the same or different time periods the proposed approach is then applied to a sample of bank branches where negative data were involved the paper shows how the approach yields information from a variety of perspectives on performance which management can use

the impact of financial liberalization on bank efficiency evidence from latin america and asia this article investigates the impact of financial liberalization on bank efficiency using data for a sample of over 4000 bank year observations from ten emerging economies for the period 1991 2000 we use data envelopment analysis dea to calculate bank efficiency at the individual bank level bank efficiency measures are then aggregated at the country level to investigate the relationship between financial liberalization and bank efficiency using a panel least square fixed effects model overall we find strong support for the positive impact of financial liberalization programmes on bank efficiency

do announcements of wto dispute resolution cases matter evidence from the rare earth elements market abstract rare earth elements rees have gained increasing attention recently for several key reasons 1 they are vital to many strategic industries 2 they are relatively scarce 3 they frequently exhibit high price fluctuations 4 china holds a quasi monopoly on their mining and 5 china s ree policy which was overly restrictive and led to a formal complaint from the u s japan and the eu at the world trade organization wto in 2012 this paper investigates whether the announcement of a wto dispute resolution case has the power to fundamentally change market dynamics we find empirical support for this notion because ree prices exhibit a structural break around the announcement of the wto dispute and show lower variance ratios for all tested rees afterward this indicates a tendency toward efficiency although ree prices still do not follow a random walk similarly we find that stock price informativeness of companies in the ree industry increases after the announcement reflecting more firm specific than marketwide information and less governmental influence finally we show that model uncertainty for option pricing models decreases which we measure by the lower pricing differences among them

a note on banking efficiency in portugal new vs old banks following entry into the european community in 1986 portugal transformed rapidly its repressed banking system with deregulation the opening of borders the granting of new banking licenses and privatization in a more competitive banking system one would expect a priori an increase in operational efficiency this paper attempts to quantify the magnitude of efficiency gains over the years 1990 1995 moreover the paper documents the relative efficiency performance of new domestic banks not hampered by a legacy of inefficiency from the past they could operate nearer the efficiency frontier the case of portugal provides unique information on the joint effect of deregulation and the granting of new banking licenses on the change in operational efficiency of a previously repressed banking system

random walk tests for the lisbon stock market this article reports the results of tests on the weak form market efficiency applied to the psi 20 index prices of the lisbon stock market from january 1993 to december 2006 as an emerging stock market it is unlikely that it is fully information efficient but we show that the level of weak form efficiency has increased in recent years we use a serial correlation test a runs test an augmented dickey fuller adf test and the multiple variance ratio test proposed by lo and mackinlay 1988 for the hypothesis that the stock market index follows a random walk nontrading or infrequent trading is not an issue because the psi 20 includes only the 20 most traded shares the tests are performed using daily weekly and monthly returns for the whole period and for five sub periods which reflect different trends in the market we find mixed evidence but on the whole our results show that the portuguese stock market index has been approaching a random walk behaviour since 2000 with a decrease in the serial d

implications of rational inattention abstract a constraint that actions can depend on observations only through a communication channel with finite shannon capacity is shown to be able to play a role very similar to that of a signal extraction problem or an adjustment cost in standard control problems the resulting theory looks enough like familiar dynamic rational expectations theories to suggest that it might be useful and practical while the implications for policy are different enough to be interesting

unit roots tests evidence from the foreign exchange futures market in this paper tests are conducted for the presence of unit roots in the autoregression representation of foreign exchange currency futures price series the results obtained from five different currency futures over the 1977 1983 period suggestthat foreign currency futures rates have autoregressive representations with a singleunit root i e borderline nonstationarity in view of this result it appears thatthe process generating the natural logarithm of foreign currency futures rates may well be approximated by random walks

estimating input specific technical inefficiency the case of the tunisian banking industry abstract this paper presents an econometric model to estimate input specific technical efficiency iste in a panel data framework it extends the few existing models to estimate iste it can be applied to any flexible functional form and technical inefficiency is firm specific and time variant this model is applied to obtain estimates of technical inefficiency specific to factors of production in the tunisian banking industry it is shown that technical efficiency of labor and capital inputs are decreasing over time labor input is more inefficiently used than capital input and banks which are relatively more efficient in using capital input are less efficient in using labor input

the efficiency effects of a single market for financial services in europe abstract this paper examines the potential efficiency effects of a single market for financial services in europe the topics covered include universal banking the merger and acquisition process itself cross border ownership and management of financial institutions and the effects of consolidation of financial institutions on the supply of relationship lending services to informationally opaque small businesses the research reviewed here suggests that the creation of a single market for the european financial services industry is not likely to bring about strong efficiency gains and that cross border efficiency barriers may prevent the single market from becoming a reality