microstructure noise realized variance and optimal sampling a recent and extensive literature has pioneered the summing of squared observed intra daily returns realized variance to estimate the daily integrated variance of financial asset prices a traditional object of economic interest we show that in the presence of market microstructure noise realized variance does not identify the daily integrated variance of the frictionless equilibrium price however we demonstrate that the noise induced bias at very high sampling frequencies can be appropriately traded off with the variance reduction obtained by high frequency sampling and derive a mean squared error mse optimal sampling theory for the purpose of integrated variance estimation we show how our theory naturally leads to an identification procedure which allows us to recover the moments of the unobserved noise this procedure may be useful in other applications finally using the profits obtained by option traders on the basis of alternative variance forecasts as our economic metric we find that explicit optimization of realized variance s finite sample mse properties results in accurate forecasts and considerable economic gains copyright 2008 wiley blackwell

privatisation in developing countries a review of the evidence and the policy lessons privatisation is widely promoted as a means of improving economic performance in developing countries however the policy remains controversial and the relative roles of ownership and other structural changes such as competition and regulation in promoting economic performance remain uncertain this article reviews the main empirical evidence on the impact of privatisation on economic performance in developing economies the evidence suggests that if privatisation is to improve performance over the longer term it needs to be complemented by policies that promote competition and effective state regulation and that privatisation works best in developing countries when it is integrated into a broader process of structural reform

drawn into violence evidence on what makes a criminal from the vietnam draft lotteries draft lottery number assignment during the vietnam era provides a natural experiment to examine the effects of military service on crime using exact dates of birth for inmates in state and federal prisons in 1979 1986 and 1991 we find that draft eligibility increases incarceration for violent crimes but decreases incarceration for nonviolent crimes among whites this is particularly evident in 1979 where two sample instrumental variable estimates indicate that military service increases the probability of incarceration for a violent crime by 0 34 percentage points and decreases the probability of incarceration for a nonviolent crime by 0 30 percentage points we conduct two falsification tests one that applies each of the three binding lotteries to unaffected cohorts and another that considers the effects of lotteries that were not used to draft servicemen jel k42 h56

privatization in eastern germany management selection and economic transition this paper suggests that management s role in enterprise restructuring and market failures in the managerial labor market help explain important features of the german privatization program a model of adverse selection based on information advantages for private owners demonstrates how privatization can improve the quality and number of western managers in eastern enterprises these benefits can increase with the size of the transition evidence of management replacement and significant differences between state owned and privatized firms from a survey of eastern german firms supports model assumptions and predictions these results suggest the importance of management replacement to successful privatization copyright 1997 by american economic association

regulatory reform and productivity growth in the uk s public utilities the reforms in the regulation of the uk nationalised industries over the last decade are examined and the extent to which they have been successful in achieving one of their declared aims that of increasing the efficiency of the enterprises operations is considered to achieve this the productivity performance of nine of the largest enterprises over the last twenty years was analysed the results show that the rate of productivity growth has been significantly higher during the 1980s compared with the preceeding decade it is concluded that a large part of the observed upturn in productivity is a result of changes in efficiency

product market competition and managerial slack this article analyzes the effect of product market competition on managerial incentives in contrast to hart 1983a i show that competition may actually exacerbate the incentive problem the difference in results derives from our different assumptions about managerial preferences the importance of assumptions about preferences suggests that we do not yet understand the precise mechanism through which competition affects incentives

hospital ownership and performance this study compares the performance of three ownership forms of hospitals for profit private nonprofit and public further classified according to whether or not the hospital is run by a hospital chain data come from a 1979 national survey of u s hospitals the authors find that hospital cost is quite similar among alternative ownership forms as is profitability the results do not provide much empirical support for standard property rights theory several reasons are suggested why this may be so

measuring hospital performance a non parametric approach abstract in this paper a technique for assessing the relative performance of firms is introduced and applied to a sample of hospitals in california hospitals are compared on the basis of their relative technical efficiency the reference technology is constructed from observed outputs and inputs including physicians using programming techniques and efficiency is assessed relative to the frontier of the technology using measures similar to those suggested by farrell the technique used here imposes no prespecified functional form allows for multiple outputs and inputs allowing for differences in case mix and yields information on the productive performance of individual hospitals this technique can also be used to determine whether different types of hospitals use different technologies our results although illustrative rather than definitive suggest that ownership affects efficiency as measured here public and nfp hospitals have different best practice frontiers and public hospitals appear to use relatively fewer resources these results could reflect differences in quality of care by ownership

the technical efficiency of vacuum pan sugar industry of india an application of a stochastic frontier production function using panel data abstract a stochastic production frontier method is used to examine technical efficiency among indian vacuum pan sugar factories over a five year period most factories are close to indian best practice in terms of technical efficiency smaller firms and firms with access to sweeter cane are likely to be more efficient than other firms while publicly owned firms are less efficient there are transitory positive effects of a long crushing season on technical efficiency

state ownership and transparency in foreign direct investment we contribute to ib literature on state owned multinationals by examining an understudied element of mne strategy transparency drawing insight from accounting finance and political science we develop theory and hypotheses regarding ownership effects on fdi disclosure we argue that transparency of outward fdi depends on both state ownership and home and host country institutions we also posit that host governments harness their soes to exploit information disclosed by foreign mnes discouraging inward fdi transparency we test our hypotheses using a unique transaction level database from the global petroleum industry analyzing a sample of 965 investment disclosures across 81 developing and developed countries we find state ownership reduces mne transparency soes are less sensitive to host country political risk than private firms soes from better governed countries are more transparent and regardless of ownership foreign mnes are more opaque when investing in the presence of a host country soe

the long term impact of military service on health evidence from world war ii and korean war veterans during the world war ii and korean war era the u s military freely distributed cigarettes to overseas personnel and provided low cost tobacco products on domestic military bases in fact even today the military continues to sell subsidized tobacco products on its bases using a variety of instrumental variables approaches to deal with nonrandom selection into the military and into smoking we provide substantial evidence that cohorts with higher military participation rates subsequently suffered more premature mortality more importantly we show that a large fraction 35 to 79 percent of the excess veteran deaths due to heart disease and lung cancer are attributable to military induced smoking

the efficiency of state owned and privatized firms does ownership make a difference abstract this paper compares the pre and post privatization efficiency of a sample of state owned enterprises privatized in spain with the efficiency of their closest private competitors we perform a two stage double bootstrap data envelopment analysis model in the first stage the efficiency is estimated through a bootstrapped data envelopment analysis and then followed in the second stage by a bootstrapped truncated regression our results provide evidence that i there were no significant differences in efficiency between the state owned enterprises and their private counterparts before privatization and ii the efficiency of newly privatized firms significantly increased after their privatization while private competitors showed no significant improvement during the same post privatization period

going to college to avoid the draft the unintended legacy of the vietnam war between 1965 and 1975 the enrollment rate of college age men in the united states rose and then fell abruptly many contemporary observers e g james davis and kenneth dolbeare 1968 attributed the surge in college attendance to draft avoidance behavior under a policy first introduced in the korean war the selective service issued college deferments to enrolled men that delayed their eligibility for conscription these deferments provided a strong incentive to remain in school for men who wanted to avoid the draft for example the college entry rate of young men rose from 54 percent in 1963 to 62 percent in 1968 the peak year of the draft moreover both the college entry rate and the number of inductions dropped sharply between 1968 and 1973 as the draft was being phased out although these parallel trends are suggestive they do not necessarily prove that draft avoidance raised the education of men who were at risk of service during the vietnam war such an inference requires an explicit specification of the counterfactual what would have happened to schooling outcomes in the absence of the draft in this paper we use trends in enrollment and completed schooling of men relative to those of women to measure the effects of draftavoidance behavior during the vietnam war our maintained hypothesis is that in the absence of gender specific factors such as the draft the relative schooling outcomes of men and women from the same cohort would follow a smooth trend in light of the sharp discontinuity in military induction rates between 1965 and 1970 we look for similar patterns in the relative enrollment rate of men and in the relative college graduation rate of men from cohorts that were at risk of induction during this period

demand for education and labor market outcomes lessons from the abolition of compulsory conscription in france before 1997 education was a way for young french men to avoid military service in the army after the abolition of compulsory conscription in 1997 this incentive to stay on in education disappeared we show that the decrease in the benefit of pursuing education for men was followed by a fall in their educational achievement relative to women and by a decrease in their relative entry wages these results suggest that high school dropout rates could be reduced by policies increasing the immediate benefits of pursuing education and that it would yield a substantial improvement in early labor market outcomes

privatization and employment a study of the jute industry in bangladesh this paper analyzes the effect of privatization upon employment in the bangladeshi jute textile industry privatization was partia and the selection of mills which were privatized was not based on current economic performance this provides us with a panel data set which permits reliable estimates of the effects of ownership on employment and output privatization has reduced employment of all categories of permanent workers significantly but the extent of employment reduction has been substantially greater among clerical workers and managers as compared to manual workers this implies that public sector excess employment benefited white collar workers who were both better off and better educated and suggests that public sector behaviour was clientelist rather than welfarist

stochastic volatility and dsge models abstract this paper argues that a specification of stochastic volatility commonly used in dsge models may not be appropriate because the level of a process with this specification does not have any moments we suggest three ways to overcome the problem

leviathan resists the endogenous relationship between privatization and firm performance using a panel dataset of privatized cement firms in turkey this paper models and finds support for the simultaneous relationship between privatization and firm performance it is found that favorable short run performance weak market potential higher employment lower socio economic development concentrated voter preferences and weaker representation of right wing parties in the firms locality delay the timing of privatization the paper also finds that privatization increases output in the medium term by reducing the labor stock and promoting the adoption of more advanced technology such that production shifts from constant to decreasing returns to scale

least squares inference on integrated volatility and the relationship between efficient prices and noise the expected value of sums of squared intraday returns realized variance gives rise to a least squares regression which adapts itself to the assumptions of the noise process and allows for joint inference on integrated variance noise moments and price noise relations in the iid noise case we derive the asymptotic variance of the and noise variance estimators and show that they are consistent the joint estimation approach is particularly attractive as it reveals important characteristics of the noise process which can be related to liquidity and market efficiency the analysis of dependence between the price and noise processes provides an often missing link to market microstructure theory we find substantial differences in the noise characteristics of trade and quote data arising from the effect of distinct market microstructure frictions this article has supplementary material online

what does a small corporate effect mean a variance components simulation of corporate and business effects in a widely cited paper rumelt 1991 presents estimates of the relative influence of corporate business unit and other influences on business unit profitability and finds the corporation explains almost none of the variability in business unit profitability using a monte carlo simulation we examine the relation of variance component magnitudes to other indicators of the importance of a particular effect our results demonstrate that variance components can be an extremely nonlinear indicator of importance we also question whether rumelt s corporate effect represents the possible contributions of corporate strategy to business unit performance this addresses a puzzle raised by rumelt 1991 concerning the small effect of corporations in explaining performance and suggests that rumelt s findings should not be seen as demonstrating the insignificance of corporate strategy 1997 john wiley sons ltd

lifetime earnings and the vietnam era draft lottery evidence from social security administrative records errata the randomly assigned risk of induction generated by the draft lottery is used to construct estimates of the effect of veteran status on civilian earnings these estimates are not biased by the fact that certain types of men are more likely than others to service in the military social security administrative records indicate that in the early 1980s long after their service in vietnam had ended the earnings of white veterans were approximately 15 percent less than the earnings of comparable nonveterans copyright 1990 by american economic association

does ownership always matter abstract the objective of this paper is to explain and illustrate the complex relationship between ownership arrangements and enterprise performance it is commonly argued that efficiency will be lower in the public sector than the private because enterprise objectives deviate from maximisation of profits and because monitoring arrangements are inadequate due to the absence of capital market discipline we argue that public ownership does make the owner manager relationship more complicated because the chain of principals and agents is expanded objectives are politically determined and these are conveyed by a policy making administrative structure to management but the relative efficiency of public as against private ownership actually depends on the efficacy of capital market monitoring on the political and constitutional system on the information and sanctions available to policy makers and on the nature of the management market variation in these factors can help to explain the different natures and roles of the public sector between countries

the financial and operating performance of newly privatized firms an international empirical analysis this study compares the pre and postprivatization financial and operating performance of 61 companies from 18 countries and 32 industries that experience full or partial privatization through public share offerings during the period 1961 to 1990 our results document strong performance improvements achieved surprisingly without sacrificing employment security specifically after being privatized firms increase real sales become more profitable increase their capital investment spending improve their operating efficiency and increase their work forces furthermore these companies significantly lower their debt levels and increase dividend payout finally we document significant changes in the size and composition of corporate boards of directors after privatization the last fifteen years have witnessed a significant global shift away from state socialism towards entrepreneurial capitalism one of the most important and visible aspects of this trend has been the enthusiasm with which governments of all political persuasions have sold their state owned enterprises soes to private investors in hopes that the generally unsatisfactory economic performance of these firms can be improved by the discipline of private ownership this denationalization process given its current title of privatization by the conservative government of margaret thatcher in

interactions between investment timing and management effort under asymmetric information costs and benefits of privatized firms abstract in this paper we examine the interactions between investment timing and management effort in the presence of asymmetric information between the owner and the manager where the manager has an informational advantage we find that investment timing is later under asymmetric information than under full information implying a decrease in the value of equity option however in order to minimize any distortion under underinvestment management effort is greater under asymmetric information than under full information we show that there are trade offs in the efficiencies of investment timing and management effort under asymmetric information these results fit well with the findings of past empirical studies concerning the costs and benefits of privatized firms

productive efficiency of public enterprises a macroeconomic analysis based on cross section estimation of a neoclassical production function over the past decade the role of public enterprise in the economic development process has been a subject of active debate using cross section estimates of a neoclassical production function incorporating vakue addition of the parasatal sector as a variable supplementary to the factors and capital it is shown onthe basis of macroeconomic data for the periods 1970 81and 1970 85 that hypothesis derived fromm the propely rights bureaucracy and x inefficiency cannot be rejected

lessons from privatization in britain abstract the process of privatizing most of britain s major public enterprises yields interesting conclusions on the three related issues 1 a problem of policy assignment arose in the use of privatization and liberalization to achieve both allocative and productive efficiency 2 evidence on the behavior of the public enterprises is consistent with an organizational model of the relevant principal agent relationships predicting certain types of slack absorption 3 the privatization process entailed policy choices that bear on their future productive efficiency effectiveness of monitoring by the market for corporate control and allocative efficiency provision for regulation

the effects of privatization on efficiency how does privatization work summary uncovering the effects of privatization is difficult because privatization of a particular firm usually is not an accident this paper tests the effects of privatization on productive and allocative market efficiency using a rich panel data set of 22 privatized cement plants from turkey in the 1983 99 period since all public cement firms were privatized and we have pre and post privatization data for all we are able to avoid the problem of endogeneity associated with sample selection our analysis goes beyond just examining the privatization effects and explores how privatization really works changes in objectives of the firm ownership effect and changes in market structure environment effect may both be responsible for privatization outcomes we find that ownership effects are sufficient to achieve improvements in labor productivity our results on allocative efficiency however are dependent on changes in the competitive environment while all plants seem to improve labor productivity through work force reductions plants privatized to foreign buyers also increase their capital and investment significantly

the determinants of privatization prices evidence from turkey this paper analyses the determinants of privatization prices in a multi industry study using a sample of 68 recently privatized firms from turkey results show that revenue and market characteristics are significant determinants of privatization prices while current cost and profit indicators are not it is argued that potential buyers regard these state firms as inefficient therefore do not take into consideration their current costs and profits in determining their value when the dependent variable is altered by dividing the firm s privatization price by the firm s sales revenues it is found that sales adjusted privatization prices are responsive to firms profit margins however this result does not hold when the sample is restricted to a single industry profit margins along with other profitability and firm efficiency measures are no longer significant determinants of sales adjusted privatization prices in the cement industry analysis unexploited production opportunities measured by capacity ut

conscription and the returns to education evidence from a regression discontinuity in 1997 the french government put into effect a law that permanently exempted young french male citizens born after jan 1 1979 from mandatory military service while still requiring those born before that cutoff date to serve this paper uses a regression discontinuity design to identify the effect of peacetime conscription on education and labor market outcomes results indicate that conscription eligibility induces a significant increase in years of education which is consistent with conscription avoidance behavior however this increased education does not result in either an increase in graduation rates or in employment and wages additional evidence shows conscription has no direct effect on earnings suggesting that the returns to education induced by this policy was zero

estimating marginal returns to education this paper estimates marginal returns to college for individuals induced to enroll in college by different marginal policy changes the recent instrumental variables literature seeks to estimate this parameter but in general it does so only under strong assumptions that are tested and found wanting we show how to utilize economic theory and local instrumental variables estimators to estimate the effect of marginal policy changes our empirical analysis shows that returns are higher for individuals with values of unobservables that make them more likely to attend college we contrast our estimates with iv estimates of the return to schooling

interactions between hospital admissions cost per day and average length of stay hospital cost per day cost annual admissions per capita admit and average length of stay alos are important health policy variables because each variable provides important information about hospital industry performance this study uses country level data to explore the empirical relationships between cost admit and alosin three steps ols estimation application of the wu hausman endogeneity test and re estimation with two stage least squares the major results are i admitand alosexert exogenous influences on costand ii admitand alosare endogenously related with possible one way casuality from admitto alos

did vietnam veterans get sicker in the 1990s the complicated effects of military service on self reported health abstract the veterans disability compensation vdc program which provides a monthly stipend to disabled veterans is the third largest american disability insurance program since the late 1990s vdc growth has been driven primarily by an increase in claims from vietnam veterans raising concerns about costs as well as health we use the draft lottery to study the long term effects of vietnam era military service on health and work in the 2000 census we find no evidence that military service affected overall employment rates or overall work limiting disability rates that is health conditions that make work difficult at the same time military service sharply increased federal transfer income especially for lower skilled white men among whom there was also a large negative impact on employment and a marked increase in disability rates the differential impact of vietnam era service on low skilled men cannot be explained by more combat or war theatre exposure for the least educated because high school graduates were at least as likely to be exposed to combat or war theatre as the less educated this leaves the relative attractiveness of vdc for less skilled men and the work disincentives embedded in the vdc system as a likely explanation for our findings

a model to assess the impact of employment policy and subsidized domestic fuel prices on national oil companies abstract national oil companies nocs control international oil markets nevertheless by the end of the 2000s their share of the industry s total revenues was only 35 while controlling more than 70 of the oil reserves and 65 of the gas reserves conventional financial theory prescribes that the proper management of an enterprise should seek the maximization of the nocs profits however maximization of profits is not their only objective their targets often include non commercial objectives such as domestic fuel subsidies and employment this paper develops a model to assess the impact of domestic fuel subsidies and employment on nocs performance which clarifies the trade offs among non commercial objectives and nocs market value production and reinvestment the model is applied and calibrated to the colombian noc to find the financial and operative effects of these non commercial objectives for different scenarios

ownership versus competition efficiency in public enterprise certainly the introduction of product market competition into potentially competitive or at least contestable markets can improve performance to take just one example morrison and whinston 1986 1986 estimate that even in the imperfectly contestable u s airline industry the annual u s welfare gains from deregulation have been around 6 billion

efficiency differences between private and state owned enterprises in the international petroleum industry technical managerial scale and allocative efficiency differences between private and state owned firms in the international petroleum industry are estimated the estimation of aigner chu deterministic frontiers maximum likelihood stochastic frontiers and maximum likelihood gamma frontiers make this analysis the most complete and sophisticated testing of property rights theory available the empirical findings suggestceteris paribus that state firms could satisfy the demand for their output with something less than half of their current resource inputs simply by being converted to private for profit enterprizes

evaluating the labor market effects of compulsory military service we identify the causal effect of compulsory military service on conscripts subsequent labormarket outcomes by exploiting the regression discontinuity design of the military draft in germany during the 1950s unbiased estimates of the effect of military service on lifetime earnings wages and employment are obtained by comparing men born before july 1 1937 the white cohort who were exempted from compulsory military service to men who were born on or shortly after this threshold date and hence faced a positive probability of being drafted we find that the putative earnings advantage and wage premium of those who served in the armed forces vanish when selection effects are taken into account

privatization in theory and practice privatization george yarrow this paper examines the theoretical and empirical case for private versus public ownership privatization usually leads managers to place greater emphasis on the pursuit of profits however whether this is beneficial to society depends on the trade off between possible market failures due to a lack of competition and deficiencies in government control of public firms the competitive and regulatory environment is more important than the question of ownership per se in competitive markets there is a presumption in favour of private ownership where there is a natural monopoly vigorous regulatory action is required the evidence suggests that privatization has led to improved performance by firms such as the national freight corporation and cable and wireless which operate in a relatively competitive environment the benefits are less clear in the case of firms like bp britoil and british aerospace however the most worrying case is that of british telecom and the projected privatization of british gas where little thought has been given to limiting the abuse of monopoly power rather the regulatory environment has been tailored to the needs of the existing management and to ensuring a successful share flotation privatization is also advanced as a weapon for reducing trade union power encouraging wider share ownership redistributing wealth and improving the public finances however there are other policy instruments better suited to achieving these objectives the existing privatization programme has not led to a marked widening of share ownership and has resulted in windfall gains to a small group of investors at the expense of taxpayers in general

the financial and operating performance of privatized firms during the 1990s this study compares the pre and postprivatization financial and operating performance of 85 companies from 28 industrialized countries that were privatized through public share offerings for the period from 1990 through 1996 we document significant increases in profitability output operating efficiency and dividend payments and significant decreases in leverage ratios for our full sample of firms after privatization and for most subsamples examined capital expenditures increase significantly in absolute terms but not relative to sales employment declines but insignificantly combined with results from two previous directly comparable studies these findings strongly suggest that privatization yields significant performance improvements during the past two decades the privatization of state owned enterprises has moved from being a radical almost desperate policy initiative of the thatcher government in britain to being an accepted economic policy for governments of all ideological stripes according to gibbon 1998 860 billion has been raised by governments worldwide through privatizations with the bulk of this total coming since 1987 and at least one commentator roche 1996 predicts that no less than 6 trillion will be raised through privatizations over the next two decades in 1997 alone sales of public enterprises totaled a record 161 billion worldwide with more than 110 billion of the total coming during the second half of the year and 1998 s total of almost 140 billion indicates that the pace shows no sign of slackening as we approach a new millennium

economic perspectives on privatization despite being one of the most fundamental issues in political economy the question of the appropriate boundary between public and private enterprise received relatively little attention in mainstream economic analysis until quite recently in the 1980s however programs of ownership reform were started in many developed and developing countries dramatic though some of these policies have been they are likely to be overshadowed in the 1990s by even greater privatization in the reforming socialist economies the opening sections of this paper are organized around three broad and interrelated questions how does ownership matter for the efficiency of enterprise performance what is the role for privatization in financing public debts and deficits what are the distributional and political implications of privatization finally we examine privatization in practice in three countries britain chile and poland

public versus private water delivery a hedonic cost approach automotive news 1967 almanac detroit slocum publishing co 1967 bucklin louis p competition and evolution in the distributive trades englewood cliffs new jersey prentice hall 1972 federal trade commission annual line of business report 1974 washington ftc 1981a processed annual line of business report 1975 washington ftc 1981b processed guth louis a robert a schwartz and david k whitcomb the use of buyer concentration ratios in tests of oligopoly models this review 58 nov 1976 488 491 jeifreys james b the distribution of consumer goods new york cambridge university press 1950 lilly digest indianapolis ely lilly and co 1976 martin stephen advertising concentration and profitability the simultaneity problem belljournal 10 autumn 1979 639 647 national petroleum news fact book 1976 new york mcgraw hill 1976 ncr expenses in retail business dayton ohio ncr undated but about 1966 and about 1976 strickland allyn d and leonard w weiss advertising concentration and price cost margins journal of political economy 84 oct 1976 1109 1123 u s department of commerce bureau of economic analysis the detailed input output structure of the u s economy 1972 volume 1 the use and make of commodities by industries washington d c government printing office 1979 u s treasury department internal revenue service statistics of income source book 1972 processed ward t s the distribution of consumer goods structure and performance new york cambridge university press 1973 weiss leonard w the geographic size of markets in manufacturing this review 54 aug 1972 245 257 case studies in american industry new york john wiley and sons 1980

a theory of privatisation public enterprises around the world have proved to be highly inefficient primarily because they pursue strategies such as excess employment that satisfy the political objectives of politicians who control them privatization of public enterprises can raise the cost to politicians of influencing them since subsidies to private firms necessary to force them to remain inefficient are politically harder to sustain than wasted profits of the state firms in this way privatization leads to efficient restructuring of firms moreover privatization is more effective when combined with a tight monetary policy and when the new owners of firms are profit maximizing investors rather than their employees or even managers copyright 1996 by royal economic society

is extending compulsory schooling alone enough to raise earnings evidence from french and british compulsory schooling laws in this paper i compare two reforms that raised the minimum school leaving age to 16 in france 1967 and in england and wales 1972 using a regression discontinuity design i find that while the reform in england and wales led to a 6 7 percent increase in hourly wages per additional year of compulsory schooling the impact of the change to french law was close to zero the results suggest that the major difference between the two reforms was that the fraction of individuals holding no qualifications dropped sharply after the introduction of the new minimum school leaving age in england and wales whereas it remained unchanged in france

a critical assessment of transaction cost theory and governance of public services with special reference to water and sanitation this is a pre copyedited author produced version of an article accepted for publication in cambridge journal of economics following peer review the version of record hulya dagdeviren and simon a robertson a critical assessment of transaction cost theory and governance of public services with special reference to water and sanitation cambridge journal of economics vol 40 6 1707 1724 january 2016 is available online at https doi org 10 1093 cje bev079

zero returns to compulsory schooling in germany evidence and interpretation abstract we estimate the impact of compulsory schooling on earnings using changes in compulsory schooling laws in west germany after world war ii most estimates in the literature indicate returns in the range of 10 to 15 while our research design is very similar to studies for various other countries we find a zero return we find no evidence that this is due to labor market institutions or the apprenticeship training system in germany the result might be due to the fact that the basic skills most relevant for the labor market are learned earlier in germany than in other countries

realized volatility forecasting in the presence of time varying noise observed high frequency financial prices can be considered as having two components a true price and a market microstructure noise perturbation it is an empirical regularity coherent with classical market microstructure theories of price determination that the second moment of market microstructure noise is time varying we study the optimal from a finite sample forecast mean squared error mse standpoint frequency selection for realized variance in linear variance forecasting models with time varying market microstructure noise we show that the resulting sampling frequencies are generally considerably lower than those that would be optimally chosen when time variation in the second moment of the noise is unaccounted for these optimal lower frequencies have the potential to translate into considerable out of sample mse gains when forecasting using high frequency variance estimates we recommend treating the relevant frequency as a parameter and evaluating it jointly with the parameters of the f

public versus private economic activity a new look at school bus transportation thomas borcherding 1977 in commenting on the public versus private literature offered the generalization that removal of an activity from the private to the public sector will double its unit costs of production the results of this paper obviously are not consistent with borcherding s rule of two generalization at the same time however the 12 cost per mile differential in favor of private ownership indicated by the results for the overall sample is not a trivial sum in absolute terms the cost per mile differences in favor of private buses contained in the five trip groups are not trivial either nor is the direct evidence from the 82 joint systems in attempting to assess the results much depends on the perspective against which they are judged

military service and political behavior evidence from france abstract we investigate the impact of compulsory military service on turnout and political preferences exploiting the suspension of mandatory conscription for french men we observe a significant and positive impact of military service on turnout we estimate that the service increases turnout by approximately 7 percentage points we also investigate the impact of conscription on political preferences when we control for selection into the military service we observe no support for a change in preferences of former conscripts

the relative efficiency of public and private firms in a regulated environment the case of u s electric utilities abstract the relative efficiency of privately owned and publicly owned electric utilities is investigated using theoretical and econometric models that allow for the effects of both ownership type and regulation the estimation results indicate that the two types of firms are equally cost inefficient in the united states the average effect of inefficiency is to increase the cost of production by 2 4 percent holding output constant inefficiency increases the average quantities demanded of capital and labor and decreases the average quantity demanded of fuel

privatization and efficiency differentiating ownership effects from political organizational and dynamic effects this paper argues that the private public ownership factor should be differentiated from other factors that also influence the effect of privatization on efficiency this is empirically confirmed in a longitudinal study of 24 spanish firms for which several political and organizational factors are found to influence the estimated effects of privatization on efficiency the analysis of the timing of the effects reveals a strong significance for post privatization years 5 6 negative and 7 8 positive this suggests that the negative effect of these factors is transitional being eventually offset by the positive effects of the change to private ownership 2000 elsevier science b v all rights reserved jel classification l33

evolution economic competence and the market for corporate control abstract to assess the merits of the market for corporate control this paper examines two processes which standard analysis does not study the allocation of economic competence and the evolution of organizational structures economic competence is seen to be an unusual scarce resource embodied in the very ways in which individuals and organizations take economic decisions which guides the allocation of all scarce resources including itself its efficient allocation is shown to require an evolutionary trial and error process where the market for corporate control plays a crucial role

productivity growth and firm ownership an analytical and empirical investigation we focus on the effect of state versus private ownership on the rates of firm specific productivity growth and cost decline by developing a model of endogenous firm specific productivity growth and testing its implications against panel data on 23 international airlines of varying levels of state ownership over the period 1973 83 our model and empirical results show that state ownership can lower the long run annual rate of productivity growth or cost decline but not necessarily their levels in the short run observed level differences in productive efficiency across private and state owned firms may thus be a function of the age distribution of the firms being compared these results appear to be independent of whether the firms operate under apparently more or less competitive or regulated markets and whether they differ in production scales the analysis offers new insights concerning the recent trend toward privatizing state owned enterprises that has been observed in many countries

from state to private ownership issues from strategic industries abstract this paper investigates the effects of privatization for a panel of 189 firms from strategic industries headquartered in 39 countries and privatized between 1984 and 2002 strategic firms can hardly be compared to manufacturing or competitive industries as they are generally under state monopoly and involve specific issues such as regulation political and institutional constraints we examine the change in ownership and postprivatization means of control by the government and assess whether positive changes in performance obtain in these particular industries that include firms from the financial mining steel telecommunications transportation utilities and oil sectors we document that governments continue to exert influence on former state owned firms after three years by retaining golden shares and or appointing politicians to key positions in the firm our multivariate results reveal a negative effect of state ownership on profitability and operating efficiency which the presence of a sound institutional and political environment moderates

social interactions in high school lessons from an earthquake after an earthquake hit southern italy in 1980 young men from certain towns were exempted from compulsory military service we show that the exemption raised high school graduation rates of boys by more than 2 percentage points we do this by comparing high school graduation rates of young exempt men and older nonexempt men from the least damaged areas and men of the same age groups from nearby towns that were not hit by the quake similar comparisons show that graduation rates of young women in the affected areas also increased since in italy women are not subject to the draft the findings suggest the presence of spillover effects jel i21 j13