reassessing the gender wage gap in madagascar does labor force attachment really matter abstract in the labor economics literature it has been argued that differences in labor force attachment across gender are important to explain the extent of the gender wage gap however measures of women s work experience are particularly prone to errors given discontinuity in labor market participation using proxy measures such as potential experience may lead to biased estimates of the returns to human capital such biases cannot be ignored since these returns are used in the standard decomposition techniques to measure the extent of gender based wage discrimination by matching two original surveys conducted in madagascar in 1998 a labor force survey and a biographical survey we built a unique data set that enabled us to combine the original information gathered from each of them particularly the earnings from current employment and the entire professional trajectories our results lead to a reassessment of the returns to human capital as potential experience always exceeds actual experience for b

cointegration and the us term structure abstract using the maximum likelihood analysis of cointegration developed by johansen 1988 1991 we test the cointegration implications of the expectations hypothesis of the term structure on a sample of us pure discount yields by using this approach we are able to analyze systems of more than two interest rates simultaneously as opposed to most previous studies which examine interest rates only in pairs one of the main results is that for the period 1952 1987 the cointegration implications generally seem to hold

a test of the rational expectations hypothesis using data from a natural experiment data on contestants choices in italian game show affari tuoi are analysed in a way that separates the effect of risk attitude preferences from that of beliefs concerning the amount of money that will be offered to contestants in future rounds this separate identification is possible by virtue of the fact that at a certain stage of the game beliefs are not relevant and risk attitude is the sole determinant of choice the rational expectations hypothesis is tested by comparing the estimated belief function with the true offer function which is estimated extraneously using data on offers actually made to contestants we find a close correspondence leading us to accept the rational expectations hypothesis the importance of belief formation is confirmed by the estimation of a mixture model which establishes that the vast majority of contestants are forward looking as opposed to myopic

panel estimates of male female earnings functions this paper applies single and simultaneous equation fixed effects fe and random effects re panel data estimation techniques to obtain male and female earnings function parameters using the panel study of income dynamics psid the paperfinds that earnings appreciation with experience and depreciation with labor market intermittency are comparable for men and women further skill atrophy rates increase not decrease once one controls for heterogeneity and endogeneity finally the unexplained male female wage differential declines from 40 percent to 20 percent when one adjusts for heterogeneity adjusting for endogeneity depends very much on the choice of instruments however when adjusting for endogeneity the gender earnings gap falls and approaches zero percent these results hold for two separate subsamples so that the estimates appear robust independent of sample selectivity

environmental regulations under simple negligence or strict liability we use negligence and strict liability as the basis for environmentalregulations and show that when jurisdictions compete for firms that engagein environmentally risky behaviour strict liability implements the sociallyoptimal outcome while simple negligence does not even if the jurisdictionsfully cooperate in setting standards of care consequently we argue that even if jurisdictions delegate standard setting to a central authority likein the european union this would not implement the socially optimaloutcome we also demonstrate that harmonization of environmental regulationsmakes more sense if strict liability is used rather than simple negligence

environmental federalism and environmental liability abstract environmental federalism considers what level of government should optimally regulate pollution this paper addresses this question for accidental pollution which government regulates through the ex post liability regimes of either negligence or strict liability we find that decentralizing the choice between these regimes does not in general induce the socially optimal outcome when firms can pay all damages all regions may choose negligence and impose an overly strict standard of due care when firms may be bankrupted by damages all regions may choose strict liability which induces too little care in addition asymmetric equilibria are possible in which some regions choose negligence others strict liability combining negligence with a pigovian tax or strict liability with a bonding requirement can align regional authorities incentives with those of a central government

a context based procedure for assessing participatory schemes in environmental planning the efficiency of participatory schemes in environmental planning is an emerging research area and many issues are not solved yet regarding the assessment of such procedures it is essential for decision makers to identify improvement opportunities of participatory schemes we propose an original procedure to address such issue through a bargaining model from the signaling game literature which accounts for participation design as well as for agents preferences beliefs and bargaining power the model is calibrated using qualitative data from surveys in french local communities involved in municipal solid waste management model simulations are used to test for assumptions on the stakeholder dialogue and explore sensitivity of game outcomes to structural parameters we propose a set of performance indicators to identify the most effective participatory schemes in achieving convergence in stakeholder positions regarding environmental and land use planning

testing the expectations hypothesis in the brazilian term structure of interest rates a cointegration analysis in this article the expectations hypothesis eh is tested using cointegration techniques for maturities ranging from 1 to 12 months for the brazilian market we found evidence suggesting that for the period 1995 2006 the cointegration implication generally seems to hold we also found strong evidence supporting causality from short to long rates and also in the opposite direction empirical evidence supports the expectations theory of the term structure of interest rates

a longitudinal analysis of white women s wages according to human capital theory women s work participation decisions will strongly affect their wages and wage growth we test human capital predictions about how labor force withdrawals both past and prospective part time work experience and working in male rather than in female jobs affect wages and wage growth for white women we do this by estimating a wage change model for the years 1967 1979 for a national sample of white women we find that wages drop immediately following withdrawals but that this is followed by a rapid wage growth so that the net loss in wages from dropping out of the labor force is small we further find that wage growth is not significantly lower in female than in male jobs but that part time work experience does not lead to significant wage growth in either male or female jobs

understanding the family gap in pay for women with children as the gender gap in pay between women and men has been narrowing the family gap in pay between mothers and nonmothers has been widening one reason may be the institutional structure in the united states which has emphasized equal pay and opportunity policies but not family policies in contrast to other countries that have implemented both the authors now have evidence on the links between one such family policy and women s pay recent research suggests that maternity leave coverage by raising women s retention after childbirth also raises women s levels of work experience job tenure and pay

a nonparametric decomposition of the mexican american average wage gap this paper shows that average wage gap decompositions between any two groups of workers can be carried out using nonparametric wage structures it also proposes an algorithm to correct for sample selection in nonparametric models known as tree structures this paper studies the wage gap between third generation mexican american and non hispanic white workers in the southwest it is shown that the decomposition heavily depends on functional assumptions and that different aproaches to flexibility may render sufficiently good and similar results copyright 2008 john wiley sons ltd

self selection bias in longitudinal estimation of wage gaps cross sectional regression analyses of wage gaps may be biased by omission of unobserved worker characteristics recent studies therefore have used longitudinal data to difference out the effects of such variables this paper however shows that self selection of job changers may cause longitudinal estimation of wage gaps to be inconsistent

regulating a polluting firm under asymmetric information this paper reinterprets the laffont tirole model of regulation under asymmetric information to cover the case of pollution control the asymmetry of information concerns the firm s cost of lowering its pollution the regulator has three objectives ensuring an efficient abatement level generating green taxes and securing the survival of the firm we show that when optimal abatement is important relative to tax generation the regulator cannot use the policy of offering the firm a set of linear tax schemes from which to choose by contrast this policy is optimal in the laffont tirole model under certain not very restrictive assumptions we proceed to establish a simple rule for when to shut down inefficient types in an example with specific functional forms we derive the optimal tax function both analytically and graphically we show the effect on the optimal tax system of a change in a technological parameter

a test of the expectations hypothesis of the term structure of interest rates for sri lanka this paper tests the expectations hypothesis of the term structure of interest rates for sri lanka the data support the hypothesis that forward and spot rates are cointegrated suggesting a stochastic trend in the structure of interest rates however the hypothesis that forward rates are unbiased predictors of future spot rates is rejected

factors affecting levels and growth rates in the wage rates of women evidence from nursing using data from two surveys of nurses 1981 and 1989 the study examines the factors affecting the levels and growth rates in the wage rates paid to women especially married women who were licensed as registered nurses our results indicate that the influence of such household characteristics as marital status age and number of children and spouse s characteristic tended to diminish over the 1980s the evidence further suggests that the penalties for frequent switches in employment state were larger at the end of the decade than at the beginning further wages paid to nurses with baccalaureates were statistically the same as those paid to nurses with lesser formal education the return to the baccalaureate appears to be in the form of the higher wages and salaries earned by those who obtain post baccalaureate degrees

the effects of sons and daughters on men s labor supply and wages in this paper we estimate the effects of children and the differential effects of sons and daughters on men s labor supply and hourly wage rates the responses to fatherhood of two cohorts of men from the psid sample are examined separately and we use fixed effects estimation to control for unobserved heterogeneity we find that fatherhood significantly increases the hourly wage rates and annual hours of work for men from both cohorts most notably men s labor supply and wage rates increase more in response to the births of sons than to the births of daughters

the information in swedish short maturity forward rates in this paper we empirically study the relationship between implicit forward rates and corresponding interest rates in the short end of the swedish term structure the interest rates and forward ra

the trend in the male female wage gap in the united states despite the rise in the feminist movement the enactment of equal opportunity legislation and the rapid increase in women s labor force participation a substantial sex differential in wages has persisted in the united states for at least 4 decades measured by hourly earnings of year round workers this wage gap was 31 in 1955 widened to a 35 37 range by the 1960s and early 1970s and then narrowed to 33 by 1982 this paper examines the extent to which changes in the characteristics of men and women in the labor force and other factors can account for the observed pattern the main finding is that increases in women s labor force participation were initially associated with a declining skill level of employed women relative to employed men where skill is measured by years of schooling and job tenure more recently the work experience of employed women has been increasing which helps account for the recent narrowing trend in the wage gap during the 1970s the wage gap probably woul have narrowed m

the choice of a liability regime when there is a regulatory gatekeeper consider a firm planning a project that poses a risk of environmental spillovers such a firm might be deterred by the threat of legal liability or restrained by gatekeeper regulation if regulators would be perfect gatekeepers then negligence based liability combined with regulation is more efficient that strict liability with or without regulation however if the regulator has incomplete information then any of a variety of regimes could be the most efficient harsher regimes regulation rather than laissez faire and strict liability rather than negligence are more appropriate for larger risks the choice of a liability regime is more complicated however if regulators are biased if they are biased against projects then negligence plus regulation is less likely to be the most efficient regime if regulators are biased toward projects then it is possible that apparently soft liability regimes are more desirable when risk is high

in and out of the labour market long term income consequences of child related interruptions to women s paid work why do canadian mothers have lower incomes than women who have never had children microdata from the 1995 gss allow examination of two hypotheses 1 mothers have spent more time out of the labour force thus acquiring less human capital 2 higher levels of unpaid work lead to fatigue and or scheduling difficulties measuring work history does little to account for the family gap the estimated child penalty is reduced by allowing for human capital depreciation and controlling for unpaid work hours but the two hypotheses together cannot entirely explain the gap jel classification j0 j3 entrees et sorties marche du travail et consequences a long terme des interruptions dans l experience sur le marche du travail a cause des enfants ce memoire se demande pourquoi les femmes canadiennes qui ont eu des enfants ont des revenus plus bas que ceux des femmes qui n en ont pas eus les microdonnees de l enquete sociale generale de 1995 de statistiques canada permettent d examiner deux hypotheses 1 les meres ont passe plus de temps en dehors de la main d oeuvre active et donc ont accumule moins de capital humain ou 2 des niveaux plus eleves de travail non remunere peuvent entrainer fatigue ou difficultes d organisation du temps des efforts pour construire une meilleure image de l experience de travail des femmes ne permettent pas d expliquer cet ecart familial meme si la possibilite qu il y ait depreciation du capital humain reduit la penalisation attachee au fait d avoir un enfant en particulier si l interruption dans l experience sur le marche du travail est suivie d un changement d emploi le nombre hebdomadaire d heures de travail non paye est relie negativement aux revenus et si l on normalise pour tenir compte des heures de travail non paye cela reduit la penalisation attachee au fait d avoir un enfant cependant les deux hypotheses combinees ne suffisent pas pour expliquer l ecart

tests of the expectations hypothesis resolving the anomalies when the short term rate is the federal funds rate abstract the expectations hypothesis eh of the term structure plays an important role in the analysis of monetary policy where shorter term rates are assumed to be determined by the market s expectation for the overnight federal funds rate with two exceptions tests using the effective federal funds rate as the short term rate easily reject the eh these exceptions are when the eh is tested over the nonborrowed reserve targeting period and when the test is performed only using data for settlement wednesdays the last day of bank reserve maintenance period this paper argues that these exceptions are anomalous in the former case the failure to reject the eh occurs when economic analysis suggests that the market should be less able to forecast the federal funds rate in the latter case it occurs when there are sharp spikes in the funds rate that cannot improve materially the market s ability to forecast the funds rate additional analysis shows that these anomalous results are a consequence of the procedure used to test the eh

the term structure spread and future changes in long and short rates in the g7 countries abstract according to the expectations hypothesis when the spread between long and short rates widens next quarter s long rate should rise in the united states however long rates decline instead of rising this anomaly is also present in canada the uk germany and japan four of the additional six g7 countries nevertheless in contrast to the us where long rates appear to overreact to expected future developments the anomalous short run movement of long rates in these other g7 countries is caused by an additive white noise error on long rates that does not materially affect the information in their term structure

the family gap for young women in the united states and britain can maternity leave make a difference in the united states and britain there is a family gap between the wages of mothers and other women differential returns to marital and parental status explain 40 50 of the gender gap another 30 40 is explained by women s lower levels of work experience and lower returns to experience taking advantage of quasi experiments in job protected maternity leave in the united states and britain this article finds that women who had leave coverage and returned to work after childbirth received a wage premium that offset the negative wage effects of children

the choice between emission taxes and output taxes under imperfect monitoring we consider a regulator s choice between environmentally motivated emissions taxes and output taxes we investigate how the optimal instrument depends on the monitoring cost function the firm s technology and on social preferences regarding output and environmental quality pure emissions taxes are usually not optimal with monitoring costs pure output taxes are optimal under sufficiently high monitoring costs sufficiently limited options for emission reduction by means other than output reduction and sufficiently high substitutability of the output finally conditions for the optimality of mixed taxes are given

the compensation regime in liability law incentives to curb environmental harm ex ante and ex post this paper analyzes private incentives for precautions against environmental harm before accidents occur and for clean up after the fact we consider the compensatory regimes used in various jurisdictions which differ in terms of the basis for compensation the level of harm clean up costs or some combination of the two and the resulting levels of compensation we establish that socially optimal decisions are usually not induced by liability law in any of the compensatory regimes however the different types and levels of compensation have distinct effects allowing the policy maker to identify the most appropriate regime for specific circumstances

the marriage earnings premium as a distributed fixed effect wage equations using cross sectional data typically find an earnings premium in excess of 10 percent for married men one leading hypothesis for the premium is that marriage facilitates specialization that enables married men to become more productive than single men another is that the premium is attributable to an unobserved fixed effect married men possessing qualities that are valued in the labor market as well as the marriage market this paper suggests that the premium is attributable to an unobserved timedistributed fixed effect that emerges and grows with the approach of marriage and continues to grow for some years after marriage a similar distributed fixed effect is found in the case of women but it is smaller and declines after a few years of marriage the results appear to cast doubt on the specialization hypothesis

gender differences in pensions the causes of gender differences in pensions are examined for retirees and employees using the 1982 newly entitled beneficiary survey and the 1979 and 1988 may current population surveys for both retirees and the employed population much of the gender gap in coverage is accounted for by gender differences in labor market characteristics while children and marriage have a negative effect on female coverage among retirees even after controlling for labor market characteristics the negative effect is not observed among more recent groups of female employees finally recent convergence of male and female labor market characteristics contributed to a decline in the coverage gap during the 1980s

modelling the choice between regulation and liability in terms of social welfare using a formal political economy model with asymmetric information we illustrate the conditions under which an environmental protection system based on extending liability to private financiers is welfare superior inferior or equivalent to a system based on an incentive regulatory scheme subject to capture by the regulatees we explicitly consider the following factors the cost of care and its efficiency in reducing the probability of an environmental accident the social cost of public funds the net profitability of the risky activities the level of damages and the regulatory capture bias we characterize in such a parameter space the regions where one system dominates the other jel classification d82 k32

does household labour impact market wages this study investigates the hypothesis that women s greater home responsibilities contribute directly to their lower wages because household labour time reduces their market effort ols regressions show a significant negative effect of household labour hours on market wages for white married women but not for other groups of women single black or men regressions correcting for endogeneity of household hours in the wage equation or heterogeneity among women indicate there is no significant effect of household labour hours on wages for any demographic group these results suggest that the evidence in support of the hypothesis is not compelling

do marital status and computer usage really change the wage structure this analysis uses several identification strategies and data sources to control for individual ability and determine the causal effect of marital status and computer usage on wages although data from the cps nlsy and a data set of identical twins show that there are large cross sectional effects of these variables new econometric specifications are applied to these data which indicate that marital status and computer usage are not important causal determinants of earnings even after adjustments are made for measurement error and within twin differences in ability

ex post liability for harm vs ex ante safety regulation substitutes or complements this paper concerns the regulation of hazardous economic activities economists have generally viewed ex ante regulations safety standards pigouvian fees that regulate an activity before an accident occurs as substitutes for ex post policies exposure to tort liability for correcting extemalities this paper shows that where there is uncertainty there are inefficiencies associated with the exclusive use of negligence liability and that ex ante regulation can correct the inefficiencies in such a case it is efficient to set the safety standard below the level of precaution that would be called for if the standard were used alone jel 619

the expectations hypothesis of the term structure the uk interbank market using a high quality weekly data set the author provides several tests of the expectations hypothesis using the vector autoregression and cointegration methodologies for several maturities between one week and twelve months for the u k interbank market on the basis of the johansen cointegration analysis there appears to be a break in the term structure when both the six month and twelve month maturities are included as a pair the latter may be due to either the presence of liquidity constraints or market segmentation or a time varying term premium all of which would invalidate the assumptions underlying the expectations hypothesis the author provides some tentative explanations of these diverse results copyright 1996 by royal economic society

an enlarged definition of cointegration abstract a broader definition of cointegration is presented allowing for different orders in the original process as a result different cointegration vectors may be generated from a given one however if the cointegrated process is stationary then the standard ideas and methods may still apply

specialization then and now marriage children and the gender earnings gap across cohorts in this paper we examine the evolution of the gender gap associated with marriage and parental status comparing cohorts born between 1936 and 1985 the model of household specialization and division of labor introduced by becker posits that when forming households couples will exploit the gains from trade by having one spouse specialize in market work while the other specializes in household work given the historical advantage of men in the labor market the model predicts specialization by gender and therefore an earnings advantage for married men and an earnings disadvantage for married women is this model of specialization useful for understanding the evolution of the gender gap across generations of women and what about children academic papers have shown that wages of mothers are significantly lower than those of non mothers with similar human capital characteristics we do not attempt to build a structural model here but rather document how changing associations between marriage and earnings and between children and earnings have contributed to the gender gap in an accounting sense

testing the expectations hypothesis in eurodeposits abstract analyzing data on euro rates for 1978 1998 we find some consistent evidence in favor of the expectations hypothesis eh of the term structure a interest rates offered on deposits in a given currency form a cointegrated system b the restrictions of the eh on the cointegrating relationships are not rejected c forward rates contain significant explanatory power on future interest rates unbiasedness being an acceptable hypothesis as a cointegrating relationship between forward rates and the appropriate future value of the corresponding short term interest rate however we also provide evidence that past rates contain information additional to that in forward rates to predict future short term rates against the rational expectations version of the eh and market efficiency

benchmarking the expectations hypothesis of the interest rate term structure an analysis of cointegration vectors i test cointegration restrictions that are consistent with the expectations hypothesis of the term structure by employing the full information maximum likelihood methods developed by johansen yield curves appear to be the result of cointegration among interest rates the cointegration vectors that best describe the long term impact of interest rate levels on interest rate changes can often be written as linear combinations of interest rate spreads there is however difficulty in keeping short term yields in such a restricted cointegrated system with other interest rates short term speculative returns from long term bonds do not conform to the expectations hypothesis

new hope for the expectations hypothesis of the term structure of interest rates survey data on interest rate expectations permit separate testing of the two alternative hypotheses in traditional term structure tests that the expectations hypothesis fails and that expected future interest rates are ex post inefficient forecasts we find that the source of the spread s poor predictions of future interest rates varies with maturity at short maturities the expectations hypothesis fails at long maturities however changes in the yield curve reflect changes in expected future rates one for one an implication of the expectations hypothesis this result confirms earlier findings that long rates underreact to short rates but now it cannot be attributed to term premia if the attractiveness of an economic hypothesis is measured by the number of papers which statistically reject it the expectations theory of the term structure is a knockout most tests beginning with macaulay 1938 find no evidence supporting the expectations hypothesis 1 many cannot even reject statistically the alternative hypothesis that the spread between long and short rates contains no information about future interest rate changes 2 to make matters worse in u s postwar data future long rates tend to rise when short rates are above long rates since the expectations hypothesis would predict that long rates tend to fall the theory often does worse than even the naive model that future interest

explaining the failures of the term spread models of the rational expectations hypothesis of the term structure contrary to the predictions of the rational expectations hypothesis of the term structure of interest rates empirical evidence suggests that the term spread between long and short rates fails to forecast future movements of long term rates although its forecasts of future short term rates are in the correct direction in this paper the authors show that this puzzling behavior of the term spread alone can be explained by a time varying term premium that is correlated with the term spread once this is accounted for neither expression of the expectations hypothesis is against the predictions of the theory copyright 1997 by ohio state university press

the expectations hypothesis of the term structure tests on us german french and uk euro rates abstract this paper tests the expectations hypothesis of the term structure on us german french and uk euro rates three tests are examined the first is based on forward rates and the other two are based on the interest rates spread first we show that the sign puzzle highlighted by campbell and shiller campbell j y shiller r j 1991 yield spreads and interest rate movements a bird s eye view review of economic studies 58 495 514 for us data does not arise in the cases of french and uk short term rates second we propose tests for the expectations hypothesis based on error correction models with these tests the sign puzzle disappears but the country puzzle remains

the term structure of very short term rates new evidence for the expectations hypothesis abstract empirical researchers have frequently rejected the expectations hypothesis the expectations hypothesis however has seldom if ever been tested at the extreme short end of the term structure where maturities are measured in days or weeks using overnight weekly and monthly repo rates i find that term rates are almost unbiased estimates of the average overnight rate this evidence provides new support for the expectations hypothesis

generalized progress of abatement technology incentives under environmental liability law this paper considers the incentives environmental liability creates to improve pollution abatement technology our analysis considers technical progress in end of pipe abatement and in the production technology used thereby generalizing the approach taken by endres et al environ resour econ 36 341 366 2007 we establish that this generalization has drastic repercussions on incentives under negligence liability while the performance of strict liability is not compromised furthermore it is demonstrated that the social desirability of investment in abatement or production technology or both decisively determines how ex ante and ex post regulation fare with respect to welfare maximization in the case of negligence liability

why wait the effect of marriage and childbearing on the wages of men and women we use data from the earlier and later cohorts of the nlsy to estimate the effect of marriage and childbearing on wages our estimates imply that marriage lowers female wages 2 4 percent in the year of marriage marriage also lowers the wage growth of men and women by about two and four percentage points respectively a first birth lowers female wages 2 3 percent but has no effect on wage growth male wages are unaffected by childbearing these findings suggest that early marriage and childbearing can lead to substantial decreases in lifetime earnings

bad eggs learning by doing and the choice of technology we model long run economic development through technology adoption under scientific uncertainty about environmental effects there are four possible long run equilibria in a socially planned economy high growth adopt rapidly but abandon damaging technologies once revealed ddt cfcs cautious brake the introduction of new technologies to avoid mistakes genetically modified organisms no growth halt technological progress to preserve secondary knowledge and collapse adopt rapidly without ever abandoning damaging technologies in the base parameterization a short sighted social planner chooses the cautious strategy a far sighted planner chooses the high growth strategy unless damages are irreversible in which case the cautious strategy again dominates regulatory options in the market economy are investigated pollution taxes do not affect the firm s level of precaution if they can only be applied after the adopting firm has reaped the benefits however they do encourage the abandonment of damaging technologies liability rules do affect precaution but may lead to excessive caution or even a no growth trap

product liability and regulation establishing the appropriate institutional division of labor society has several institutional mechanisms that promote the control of product health and safety risks and compensation of the income losses that these risks generated for risks traded in the market economic forces at work foster each of these objectives social insurance programs such as worker s compensation promote the compensation objective directly and influence safety incentives through the meritrating procedure two additional institutional mechanisms which are the focus of this paper are tort liability and regulation each of these institutions has assumed a more active role in the last two decades and has been the focus of considerable academic and policy debate what is most noteworthy about these discussions is that both policymakers and economic analysts generally view each institution as the only societal response to the risk in the field of legal scholarship this narrow approach has been termed the tortcentric perspective by richard stewart 1987a b such a piecemeal approach may be necessary in some cases as an analytic convenience but it neglects potentially important interactions of the two systems in this paper i explore the nature of the institutional interactions in section i and examine the appropriate institutional design in section ii the general conclusion is that risk regulation should play a dominant role in augmenting market incentives for risk reduction and that the scope of product liability remedies should be scaled back to reflect its subsidiary role

regulating an externality generating utility environmental taxes under limited information global warming is currently an important item on most nationalenvironmental agendas in many countries coal fired electricity generatingstations represent an important source of greenhouse gases we examinehow regulations to curb emissions affect public utility pricing regulationwhen regulators act non cooperatively we show that when there is limitedinformation on fixed abatement costs an environmental regulator prefersan emission tax over an output tax or a lump sum environmental tax thepublic utility regulator prefers the lump sum tax regime

the expectation hypothesis in emerging financial markets the case of malaysia this article deals with the expectation hypothesis of the term structure of interest rates it is argued that the rapid progress and financial market liberalization that is occurring in emerging financial markets could provide additional evidence for testing the expectation hypothesis this article employs data from the malaysian government securities market which represents one of the examples of an emerging financial market cointegration and error correction analyses show significant empirical validity for the expectation hypothesis the long and short term interest rates are shown to be cointegrated and subject to a long run equilibrium path in addition to shedding some light on the experience of emerging financial market this article explicitly identifies the process of adjustment towards the long run equilibrium for the long run the results are in favour of the long to short version of expectation hypothesis with longer term interest rates playing a greater role as equilibrium attractor howeve

the term structure of euro rates some evidence in support of the expectations hypothesis abstract this paper studies 1 3 6 and 12 month euro rates for 17 countries using between 10 and 30 years of data term spreads contain information about future short term rates in all 51 regressions that we estimate moreover in 35 cases we are unable to reject the expectations hypothesis using cross sectional regressions we estimate the variance of the term premium and the correlation of the term premium and the expected change in short rates we conclude that despite evidence of a time varying term premium for many countries the expectations hypothesis is broadly compatible with the data

renegotiation design with multiple regulators abstract one striking feature of the internal organization of governments is the existence of multiple regulators this paper explains this organizational choice as coming from the government s limited ability to commit the separation of powers between two regulators is modeled as a stackelberg common agency game with respect to the case of a single regulator the allocative efficiency and the regulated firm s informational rent are both reduced in the unique equilibrium of this game however when regulators have a limited ability to commit this static cost of regulators separation becomes a dynamic benefit separation makes renegotiation harder and improves commitment journal of economic literature classification numbers d82 l51

the motherhood earnings dip evidence from administrative records using spanish social security records we document the channels through which mothers fall onto a lower earnings track such as shifting into part time work accumulating lower experience or transitioning to lower paying jobs and are able to explain 71 percent of the unconditional individual fixed effects motherhood wage gap the earnings trajectories analysis reveals that mothers to be experience important relative earnings increases several years before giving birth but this earnings advantage falls right after birth taking in average nine years to recover heterogeneity matters as most of the motherhood dip is driven by workers with permanent contracts

sources of bias in women s wage equations results using sibling data we use data on sisters to jointly address heterogeneity bias and endogeneity bias in estimates of wage equations for women this analysis yields evidence of biases in ols estimates of wage equations for white and black women some of which are detected only when the two sources of bias are addressed simultaneously for both white and black women there is evidence of upward bias in the estimated returns to schooling bias corrected estimates of the effect of marriage on wages for white women suggest a positive marriage premium we also use the sibling data to identify our models and test a number of other commonly used identifying assumptions as overidentifying restrictions