an empirical procedure to evaluate monetary management under exogenous changes in the money supply this article proposes an empirical procedure to evaluate central banks monetary management in a presence of exogenous changes in the money supply monetary shocks deviate the market intere

estimating the open market desk s daily reaction function this paper presents the results of an empirical investigation into the proximate determinants of the federal reserve s daily open market operations using information available each morning at the fed conference call the author models the open market desk s choice of both the quantity and the type of operation using a friction model for the former and a multinomial logit framework for the latter different types of operations are shown to send different signals to the market about the underlying thrust of fed policy and open market operations in recent years are shown to have become increasingly keyed to the federal funds rate copyright 1993 by ohio state university press

hiv wages and the skill premium abstract the hiv epidemic has dramatically decreased labor supply among prime age adults in sub saharan africa using within country variation in regional hiv prevalence and a synthetic panel i find that hiv significantly increases the capital labor ratio in urban manufacturing firms the impact of hiv on average wages is positive but imprecisely estimated in contrast hiv has a large positive impact on the skill premium the impact of hiv on the wages of low skilled workers is insignificantly different from 0 and is strongly dampened by competition from rural migrants the hiv epidemic disproportionately increases the incomes of high skilled survivors thus increasing inequality

living like there s no tomorrow the psychological effects of an earthquake on savings and spending behavior abstract natural disasters impact economies not only through physical damages but also by affecting survivors emotionally and psychologically this can alter their economic behavior in ways that remain poorly understood we present a model of post disaster savings that reveals two opposing tendencies the need to self insure through increased savings and the drive to enjoy life while it lasts through increased spending we use panel datasets from china s sichuan province and isolate psychological impacts by focusing on those who lived in quake areas but did not themselves suffer damages or injuries although they did not bear economic losses they saved less spent more on alcohol and played majiang a chinese game more often suggesting that the no tomorrow tendency dominated over the precautionary tendency the magnitude of the savings rate impact a drop of 0 17 percentage points for each percent of distance closer to the epicenter is economically significant and persists in the medium term

life expectancy and human capital investments evidence from maternal mortality declines longer life expectancy should encourage human capital accumulation since a longer time horizon increases the value of investments that pay out over time previous work has been unable to determine the empirical importance of this life expectancy effect due to the difficulty of isolating it from other effects of health on education we examine a sudden drop in maternal mortality risk in sri lanka between 1946 and 1953 which creates a sharp increase in life expectancy for school age girls without contemporaneous effects on health and which also allows for the use of boys as a control group using additional geographic variation we find that the 70 reduction in maternal mortality risk over the sample period increased female life expectancy at age 15 by 4 1 female literacy by 2 5 and female years of education by 4 0 authors

sexually transmitted infections sexual behavior and the hiv aids epidemic forty million people are infected with hiv worldwide twenty five million of them are in sub saharan africa this paper addresses the question of why africa has been so heavily affected by hiv and what explains the variation within africa i present a model that decomposes epidemic level into differences in sexual behavior and differences in viral transmission rates i argue using evidence drawn from the existing medical literature that africa has very high hiv transmission rates likely due to high rates of other untreated sexually transmitted infections while transmission rates in the united states are low the difference in transmission rates is large enough to explain the observed difference in prevalence between the united states and sub saharan africa the model also provides a good fit to cross country data within africa and suggests that in contrast to the intracontinental results differences within that continent can be attributed to differences in sexual behavior and epidemic timing the results suggest that cost effective policy interventions would focus on decreasing transmission rates within africa possibly by treating other untreated sexually transmitted infections authors

airport and airline competition for passengers departing from a large metropolitan area abstract in this paper an airport and airline choice model based on a nested multinomial logit model is developed to investigate both airport competition and airline competition in a metropolitan area with multiple departure airports the model can be used to analyze the effects of e g an improvement in accessibility of a specific airport in a metropolitan area it is shown analytically that if the frequency elasticity of demand is smaller than 1 unique airfare frequency and passenger charge equilibria exist next symmetric equilibria are derived analytically their properties are also examined finally asymmetric equilibria are derived numerically while their properties are discussed as well

disease and development evidence from hookworm eradication in the american south this study evaluates the economic consequences of the successful eradication of hookworm disease from the american south the hookworm eradication campaign c 1910 began soon after i the discovery that a variety of health problems among southerners could be attributed to the disease and ii the donation by john d rockefeller of a substantial sum to the effort the rockefeller sanitary commission rsc surveyed infection rates in the affected areas eleven southern states and found that an average of forty percent of school aged children were infected with hookworm the rsc then sponsored treatment and education campaigns across the region follow up studies indicate that this campaign substantially reduced hookworm disease almost immediately the sudden introduction of this treatment combines with the cross area differences in pre treatment infection rates to form the basis of the identification strategy areas with higher levels of hookworm infection prior to the rsc experienced greater increases in school enrollment attendance and literacy after the intervention this result is robust to controlling for a variety of alternative factors including differential trends across areas changing crop prices shifts in certain educational and health policies and the effect of malaria eradication no significant contemporaneous results are found for adults who should have benefited less from the intervention owing to their substantially lower prior infection rates a long term follow up of affected cohorts indicates a substantial gain in income that coincided with exposure to hookworm eradication i also find evidence that eradication increased the return to schooling

airport pricing congestion tolls lumpy investment and cost recovery abstract in this paper we investigate the relationship between congestion tolls and capacity expansion costs for congestion prone transportation infrastructures with lumpy investment with constant variable costs and social marginal cost pricing this relationship determines the cost recovery status of an infrastructure authority the theoretical model for optimal user charges and the timing of capacity expansion shows that the relative magnitudes of total congestion tolls and total capacity costs in an investment cycle depend on the time pattern of traffic growth a point overlooked in the literature a queuing model is used to conduct a numerical experiment to determine the cost recovery ratios under various time paths of traffic growth

mortality risk and human capital investment the impact of hiv aids in sub saharan africa abstract over the past several decades the hiv aids epidemic has dramatically altered patterns of morbidity and mortality in sub saharan africa with potential consequences for human capital investment and economic growth using data from demographic and health surveys for fifteen countries in sub saharan africa i estimate the relationship between regional hiv prevalence and the change in individual human capital investment over time consistent with a simple model of human capital investment incorporating mortality risk i find that areas with higher levels of hiv experienced relatively larger declines in schooling

the pricing of public intermediate goods revisited abstract this paper revisits the pricing of publicly produced goods for competitive downstream industries we show that under a general equilibrium setting and with a general technology in the private production a uniform pricing formula should apply to the household and the private firm this uniform pricing formula extends the optimal formulae derived in baumol and bradford 1970 in a straightforward way

the gift of the dying the tragedy of aids and the welfare of future african generations this paper simulates the impact of the aids epidemic on future living standards in south africa i emphasize two competing effects on the one hand the epidemic is likely to have a detrimental impact on the human capital accumulation of orphaned children on the other hand widespread community infection lowers fertility both directly through a reduction in the willingness to engage in unprotected sexual activity and indirectly by increasing the scarcity of labor and the value of a woman s time i find that even with the most pessimistic assumptions concerning reductions in educational attainment the fertility effect dominates the aids epidemic on net enhances the future per capita consumption possibilities of the south african economy

private health investments under competing risks evidence from malaria control in senegal this study exploits the introduction of high subsidies for anti malaria products in senegal in 2009 to investigate if malaria prevents parents to invest in child health building upon the seminal paper of dow et al 1999 we develop a simple model of health investments under competing mortality risks in which people allocate expenses to equalize lifetime across all causes of death we predict that private health investments to fight malaria as well as other diseases should increase in response to anti malaria public interventions to test this prediction we use original panel data from a senegalese household survey combined with geographical information on malaria prevalence our strategy is to compare the evolution of child health expenditures before and after anti malaria interventions between malarious and non malarious regions of senegal we find that health expenditures in malarious regions catch up with non malarious regions at the extensive and intensive margins and both in level and in composition the same result holds for parental health seeking behavior in case of other diseases like diarrhea we provide evidence that these patterns cannot be explained by differential trends in total income or access to healthcare or child morbidity between malarious and non malarious regions our results suggest that behavioral responses to anti malaria campaigns magnify their impact on all cause mortality for children

child income appropriations as a disease coping mechanism consequences for the health education relationship this paper analyses the relationships between hiv aids and education taking into account the appropriative nature of child income using a theoretical model we show that considering remittances from one s child as an insurance asset can reverse the usual negative relationship between disease prevalence and educational investment this prediction confirms the results of an empirical study conducted on data compiled from the demographic and health survey dhs database for 12 sub sahara african countries for children aged between 7 and 22 years old using regional hiv prevalence as a measure of health risk we find that the sign of the slope between health risk and the enrolment of children is not constant splitting the data based on expected remittance patterns for example rural versus urban we obtain that the effect is most likely driven by household characteristics related to child income appropriation

limited life expectancy human capital and health investments human capital theory predicts that life expectancy will impact human capital attainment we estimate this relationship using variation in life expectancy driven by huntington disease an inherited neurological disorder we compare investments for individuals who have ex ante identical risks of hd but differ in disease realization individuals with the hd mutation complete less education and job training the elasticity of demand for college attendance with respect to life expectancy is around 1 0 we relate this to cross country and over time differences in education we use smoking and cancer screening data to test the corollary that health capital responds to life expectancy

financial intermediation and macroeconomic analysis a macroeconomic framework in which fi nancial intermediation matters for the allocation of resources allocation of resources in this paper i fi rst discuss why neither standard macroeconomic models that in this paper i fi rst discuss why neither standard macroeconomic models that abstract from fi nancial intermediation nor traditional models of the bank lending abstract from fi nancial intermediation nor traditional models of the bank lending channel are adequate as a basis for understanding the recent crisis i argue that channel are adequate as a basis for understanding the recent crisis i argue that instead we need models in which intermediation plays a crucial role but in which instead we need models in which intermediation plays a crucial role but in which intermediation is modeled in a way that better conforms to current institutional intermediation is modeled in a way that better conforms to current institutional realities in particular we need models that recognize that a market based fi nan realities in particular we need models that recognize that a market based fi nan cial system one in which intermediaries fund themselves by selling securities in cial system one in which intermediaries fund themselves by selling securities in competitive markets rather than collecting deposits subject to reserve require competitive markets rather than collecting deposits subject to reserve require ments is not the same as a frictionless system ments is not the same as a frictionless system i then sketch the basic elements of an approach that allows fi nancial inter i then sketch the basic elements of an approach that allows fi nancial inter mediation and credit frictions to be integrated into macroeconomic analysis in a mediation and credit frictions to be integrated into macroeconomic analysis in a straightforward way i show how the model can be used to analyze the macroeco straightforward way i show how the model can be used to analyze the macroeco nomic consequences of the recent fi nancial crisis and conclude with a discussion of nomic consequences of the recent fi nancial crisis and conclude with a discussion of some implications of the model for the conduct of monetary policy some implications of the model for the conduct of monetary policy

fixed costs and the behavior of the federal funds rate abstract this paper presents an equilibrium model of the federal funds market that ties movements in the funds rate to changes in the supply of reserves and to a fixed cost facing banks that borrow at the discount window it is found that the existence of the fixed cost is capable of explaining a number of features of the funds market in particular it is critical for explaining occasional instances of extremely high funds rates it also provides an explanation for heterogeneous behavior across banks towards the discount window and for higher average funds rates at the end of maintenance periods

public goods with costly access abstract we examine the optimal allocation of excludable public goods with a private access cost that some consumers may not be able to afford the full information benchmark is presented first then individuals access costs and income levels are private information when high income consumers have low access cost asymmetric information increases the cost of subsidizing the poor for accessing the public good and inequality increases when the low access cost consumers have the lower income subsidizing the poor may involve countervailing incentives but inequality decreases finally monopoly provision exacerbates underprovision of the poor particularly of those with low access cost

economic booms and risky sexual behavior evidence from zambian copper mining cities existing studies suggest that individual and household level economic shocks affect the demand for and supply of risky sex however little evidence exists on the effects of an aggregate shock on equilibrium risky sexual behavior this paper examines the effects of the early twenty first century copper boom on risky sexual behavior in zambian copper mining cities the results suggest that the copper boom substantially reduced rates of transactional sex and multiple partnerships in copper mining cities these effects were partly concentrated among young adults and copper boom induced in migration to mining cities appears to have contributed to these reductions

how does the ecb implement monetary policy abstract this paper provides a simple weekly model of the regular supply of liquidity in the euro area with a view to understand the functioning of the euro area money market the main result of the analysis is that liquidity has normally been provided by the ecb in a neutral and smooth manner but also that there has been some attempt albeit very limited to correct deviations of the overnight rate from the main refinancing rate moreover the paper finds that liquidity has affected the overnight interest rate to a significant extent only after the last main refinancing operation of the maintenance period when it is not possible for the ecb to adjust liquidity imbalances except by making recourse to fine tuning operations

transaction costs and equilibrium pricing of congested public goods with imperfect information abstract this paper examines the role of transaction costs in pricing a congested public facility which can be used with variable intensity when there exists information asymmetry between consumers and firms if a per visit price toll requires a large transaction cost of toll gates a lump sum price season ticket price may be used in equilibrium however under the lump sum price together with imperfect information high demanders in terms of visits to the facility have an incentive to patronize facilities designed for low demanders to exploit a price difference thus an adverse selection problem may arise and equilibrium is in general inefficient depending on the magnitude of the transaction cost

congestion pricing of canadian airports abstract under congestion pricing canadian airports would annually save between 72 and 105 million social costs per landing and takeoff decrease about 300 at toronto and vancouver and 50 at calgary and montreal slot constraints fail to eliminate this airport congestion congestion prices are lower on average than existing weight based prices current airport capacity accommodates at least five more years of traffic growth before congestion reaches current levels substantial welfare gains occur even if dominant airlines already internalize their self imposed delays this article calculates equilibrium congestion pricing schedules traffic rates queuing delays layover times and connection times by time of day

pricing the major us hub airports abstract implementing congestion pricing at 27 major us airports would reduce delays by 13 passenger years and 1000 aircraft hours every day saving 3 5 million dollars daily chicago and atlanta would save about 1000 dollars per aircraft airport revenues would increase about 11 million dollars daily a bottleneck model with stochastic queues estimates substantial welfare gains whether or not airlines internalize self imposed delays erroneously imposing fees from the non internalizing specification on internalizing airlines however would be a costly mistake the model calculates equilibrium traffic rates queuing delays layover times connection times and congestion fee schedules by minute of the day

the economics of airport congestion pricing abstract conventional economic wisdom suggests that congestion pricing would be an appropriate response to cope with the growing congestion levels currently experienced at many airports several characteristics of aviation markets however may make naive congestion prices equal to the value of marginal travel delays a non optimal response this paper develops a model of airport pricing that captures a number of these features the model in particular reflects that 1 airlines typically have market power and are engaged in oligopolistic competition at different sub markets 2 part of external travel delays that aircraft impose are internal to an operator and hence should not be accounted for in congestion tolls and 3 different airports in an international network will typically not be regulated by the same authority we present an analytical treatment for a simple two node network and some numerical results to illustrate our findings some main conclusions are that second best optimal tolls are typically lower than what would be suggested by congestion costs alone and may even be negative and that cooperation between regulators need not be stable but that non cooperation may lead to welfare losses also when compared to a no tolling situation

two tier pricing of shared facilities in a free entry equilibrium we explore how well the market will provide shared facilities which are subject to congestion it is usually efficient to have multiple facilities because it is more efficient to spend resources on facilities than to endure crowding costs we assume firms can charge a membership price and a visit price we present a symmetric nash equilibrium in these two prices we show that ifthe number offirms is large the membership price will be small thus the membership price is a measure of market power when entry occurs in response to positive profit but such that entry is deterred by the prospect of negative profit in a symmetric nash equilibrium the endogenous number offirms is bounded below by one fewer than the efficient number thefees paid by a client converge to an appropriately defined competitive price as the economy is replicated

bank behavior interest rate determination and monetary policy in a financial system with an intraday federal funds market abstract this paper has two purposes one is to construct a formal model of the determination of and relationships between interest rates on funds with 24 hour overnight and intraday terms the second is to use this model to examine the likely effects of alternative federal reserve proposals for addressing the issue of intraday extension of federal reserve credit in the form of daylight overdrafts of bank reserve accounts it is demonstrated that present proposals all entail potentially significant drawbacks for monetary policy

the economic effects of non optimal pricing and investment policies for substitutable transport facilities a dynamic simulation model of subbstitutable transportation facilities demonstrated the welfare revenue and capacity implications of various non optimal pricing and investment policies applications to a major airport and an urban transportation system an expressway and a subway showed that in both cases the welfare surface surrounding the optimal policy is relatively flat for a substantial range and that existing policies are also on this range for both transportation systems a policy of financial self sufficiency is on this range for the airport but not for the urban transportation system author

day to day monetary policy and the volatility of the federal funds rate we propose a model of the interbank money market with an explicit role for central bank intervention and periodic reserve requirements and study the interaction of profit maximizing banks with a central bank targeting interest rates at high frequency the model yields predictions on biweekly patterns of the federal funds rate s volatility and on its response to changes in target rates and in intervention procedures such as those implemented by the fed in 1994 theoretical results are consistent with empirical patterns of interest rate volatility in the u s market for federal funds

the white black educational gap stalled progress and the long term consequences of the emergence of crack cocaine markets abstract we propose the rise of crack cocaine markets as a key explanation for the end to the convergence in black white educational outcomes in the united states that began in the mid 1980s after constructing a measure to date the arrival of crack markets in cities and states we show that the decline in educational outcomes for black males begins with the start of the crack epidemic we also show that there are higher murder and incarceration rates after the arrival of crack cocaine and that these are predictive of lower black high school completion rates a result consistent with human capital theory we estimate that effects related to crack markets can account for approximately 40 to 70 of the fall in black male high school completion rates

aids mortality and its effect on the labor market evidence from south africa abstract this paper investigates how hiv aids has impacted the labor market in south africa focusing on its effect on wages and employment this is done by matching individual level data with group specific cumulative aids mortality rates exploiting the panel nature of the data i remove individuals whose productivity is most likely impacted by hiv aids and find evidence that cumulative aids mortality has led to reductions in wages of between 3 and 6 for the african population group black south africans furthermore i also find evidence that the epidemic has lowered employment in south africa this result is concentrated among those with the lowest levels of education and employment although not large in magnitude these effects are widespread across a significant portion of the population contributing to a substantial loss of income throughout the south african economy

monetary policy implementation and the federal funds rate this paper investigates how the implementation of monetary policy affects the dynamics and the volatility of the federal funds rate since the early 1980s the most important changes in the fed s conduct of monetary policy refer to the role of the federal funds rate target and the reserve requirement system we show that the improved communication and transparency regarding the federal funds rate target has significantly increased the fed s influence on the federal funds rate since 1994 by contrast the declining role of required reserves in the u s has contributed to higher federal funds rate volatility our results suggest that the planned introduction of remunerated reserves will further enhance the controllability of the federal funds rate

excludable public goods pricing and social welfare maximization abstract we compare two pricing strategies buffet pricing and usage pricing of excludable public goods for social welfare maximization buffet pricing is better than usage pricing for low consumer heterogeneity while the opposite holds for high consumer heterogeneity

longevity and lifetime labor supply evidence and implications conventional wisdom suggests that increased life expectancy had a key role in causing a rise in investment in human capital i incorporate the retirement decision into a version of ben porath s 1967 model and find that a necessary condition for this causal relationship to hold is that increased life expectancy will also increase lifetime labor supply i then show that this condition does not hold for american men born between 1840 and 1970 and for the american population born between 1890 and 1970 the data suggest similar patterns in western europe i end by discussing the implications of my findings for the debate on the fundamental causes of long run growth

monetary policy implementation and overnight rate persistence overnight money market rates are the predominant operational target of monetary policy as a consequence central banks have redesigned the implementation of monetary policy to keep the deviations of the overnight rate from the key policy rate small and short lived this paper uses fractional integration techniques to explore how the operational framework of four major central banks afiects the persistence of overnight rates our results suggest that a well communicated and transparent interest rate target of the central bank is a particularly important condition for a low degree of overnight rate persistence

open mouth operations abstract this paper explains how central bank statements rather than open market operations can be used to implement monetary policy in the extreme policy instruments can be held constant and yet interest rates will evolve along the path desired by the central bank we show how the recent implementation of monetary policy in new zealand works in this way using announcement data from new zealand we find that open mouth operations lead to large changes in interest rates across all maturities and these changes cannot be explained by open market operations implications are drawn for monetary policy in other jurisdictions

quantitative easing and unconventional monetary policy an introduction this article assesses the impact of quantitative easing and other unconventional monetary policies followed by central banks in the wake of the financial crisis that began in 2007 we consider the implications of theoretical models for the effectiveness of asset purchases and look at the evidence from a range of empirical studies we also provide an overview of the contributions of the other articles in this feature

hiv testing subjective beliefs and economic behavior this paper examines the effects of learning hiv status on economic behavior among rural malawians according to economic life cycle models if learning hiv results is informative about additional years of life being diagnosed hiv positive or negative should predict changes in consumption investment and savings behavior with important micro and macro economic implications using an experiment that randomly assigned incentives to learn hiv results i find that while learning hiv results had short term effects on subjective belief of hiv infection these differences did not persist after two years consistent with this there were relatively few differences two years later in savings income expenditures and employment between those who learned and did not learn their status