workfare wellbeing and consumption evidence from a field experiment with kenya s urban poor abstract restrictions like work requirements and constraints on voucher transfers are often used in social welfare systems but little empirical evidence exists on their impact on wellbeing we conducted a 10 day randomized experiment with 432 individuals living below the poverty line in the kawangware settlement of nairobi kenya testing two elements of social welfare design workfare versus welfare and restricted versus unrestricted vouchers participants were randomly assigned to a work condition involving daily work for unrestricted vouchers or one of two wait conditions involving daily waiting for vouchers that were either unrestricted or partially restricted to staple foods we find that working improved psychological wellbeing relative to waiting suggesting that the means of implementing welfare programs may have important effects on individuals beyond the impact of monetary benefit alone furthermore although the restrictions were inframarginal partially restricted vouchers crowded in spending on staple foods suggesting the existence of a flypaper effect in spending from restricted vouchers

market fundamentals competition and natural gas prices after the liberalisation of the gas industry trading hubs have emerged in europe although these hubs appear to be liquid market places fostering gas to gas competition the efficiency of the gas market remains a topic of interest as a fair share of gas is still traded through long term contracts with prices linked to the oil price while the number of gas suppliers to the european market is limited in order to assess the efficiency of the gas market we analyse the day ahead spot price at the dutch gas hub over the period 2011 2014 we find that the oil price had a small positive impact on the gas price changes in the concentration on the supply side did not affect the movement in gas prices the availability of gas in storages and the outside temperature negatively influenced the gas price we also find that the gas price was related to the production of wind electricity overall we conclude that the day ahead gas prices are predominantly determined by gas market fundamentals policies to further integrate gas markets within europe may extend this gas to gas competition to a larger region

structural breaks in the international dynamics of inflation abstract this paper proposes an iterative procedure to discriminate between structural breaks in the coefficients and the disturbance covariance matrix of a system of equations with recursive proc

an experiment on time preference and misprediction in unpleasant tasks we experimentally investigate the time inconsistent taste for immediate gratification and future preference misprediction across 7 weeks 100 participants choose the number of unpleasant transcription tasks given various wages to complete immediately and at different future dates participants preferred 10 12 fewer tasks in the present compared to any future date leading to an estimated of 0 83 comparing predictions with actual immediate work choices provides evidence against substantial sophistication with estimates implying that participants understand no more than 24 of their present bias finally we find evidence of projection bias participants wished to complete 4 12 fewer tasks when decisions were elicited right after completing tasks rather than before

the dynamic linkages between crude oil and natural gas markets abstract the time varying price spillovers between natural gas and crude oil markets for the period 1994 to 2014 are investigated contrary to earlier research we show that in a large part of our sample the natural gas price leads the price of crude oil with price spillover effects lasting up to two weeks this result is robust to a battery of tests including out of sample forecasting exercises however after 2006 we detect little price dependencies between these two energy commodities these findings arise due to a conjunction of both demand and supply side shocks arising from both natural and economic events including hurricane katrina the tohoku earthquake and the global financial crisis as well as infrastructure and technological improvements the increased use of new technologies such as hydraulic fracking for the extraction of gas and oil in particular affected supply in the latter part of the study we conclude that the long term relation present in the early part of the sample has decoupled such that price determination of these two energy sources is now independent

is there a global market for convertible bonds prior to 1984 the stock price reaction to announcements of convertible issue in the domestic market was significantly negative while the reaction to issues on the eurobond market was smaller in absolute value and not consistently negative after 1984 this difference in stock price reactions seems to have disappeared the difference in abnormal returns before 1984 cannot be explained by existing signaling models of convertible bond issues it is consistent however with the hypothesis that american firms captured some of the tax advantage of eurobonds relative to domestic bonds before the change in u s withholding taxes in july 1984 copyright 1992 by university of chicago press

toward the integration of european natural gas markets a time varying approach abstract over the past fifteen years european gas markets have radically changed in order to build a single european gas market a new regulatory framework has been established through three european gas directives the purpose of this article is to investigate the impact of the reforms in the natural gas industry on consumer prices with a specific focus on gas prices for industrial use the strength of the relationship between the industrial gas prices of six western european countries is studied by testing the law of one price for the period 1991 2009 estimations were carried out using both cointegration analysis and time varying parameter models results highlight an emerging and on going process of convergence between the industrial gas prices in western europe since 2001 for the six eu member states the strength and the level of convergence differ widely between countries strong integration of gas markets in continental europe except for the belgian market has been established it appears that the convergence process between continental countries and the uk is not completed thus the integration of european gas markets remains an open issue and the question of how far integration will proceed will still be widely discussed in the coming years

the short term impact of unconditional cash transfers to the poor experimental evidence from kenya we use a randomized controlled trial to study the response of poor households in rural kenya to unconditional cash transfers from the ngo givedirectly the transfers differ from other programs in that they are explicitly unconditional large and concentrated in time we randomized at both the village and household levels furthermore within the treatment group we randomized recipient gender wife versus husband transfer timing lump sum transfer versus monthly installments and transfer magnitude us 404 ppp versus us 1 525 ppp we find a strong consumption response to transfers with an increase in household monthly consumption from 158 ppp to 193 ppp nine months after the transfer began transfer recipients experience large increases in psychological well being we find no overall effect on levels of the stress hormone cortisol although there are differences across some subgroups monthly transfers are more likely than lump sum transfers to improve food security whereas lump sum transfers are more likely to be spent on durables suggesting that households face savings and credit constraints together these results suggest that unconditional cash transfers have significant impacts on economic outcomes and psychological well being

will small energy consumers be faster in transition evidence from the early shift from coal to oil in latin america abstract this paper provide evidence of the early transition from coal to oil for 20 latin american countries over the first half of the 20th century which does not fit the transition experiences of large energy consumers these small energy consumers had earlier and faster transitions than leading nations we also provide evidence for alternative sequences inverse revertible in the transition from coal to oil furthermore we demonstrate that leapfrogging allowed a set of follower economies to reach the next rung of the energy ladder oil domination 30 years in advance of the most developed economies we examine these follower economies where transition took place earlier and faster than the cases historically known in order to understand variation within the energy transitions and to expand the array of feasible pathways of future energy transitions we find that being a small energy consumer makes a difference for the way the energy transition takes place but also path dependence including trade and technological partnerships domestic energy endowment which dictates relative prices and policy decisions seem to be the variables that shaped past energy transitions

who is vouching for the input voucher decentralized targeting and elite capture in tanzania input subsidy programs carry support as instruments to increase agricultural productivity provided they are market smart this requires especially proper targeting to contain the fiscal pressure with decentralized targeting of input vouchers currently the instrument of choice nonetheless despite clear advantages in administrative costs the fear of elite capture persists these fears are borne out in the experience from the 2008 input voucher pilot program in kilimanjaro tanzania examined here elected village officials received about 60 percent of the distributed vouchers a factor that significantly reduced the targeting performance of the program especially in more unequal and remote communities when targeting the poor greater coverage and a focus on high trust settings helped mitigate these concerns the findings highlight the continuing need for scrutiny when relying on decentralized targeting a clearer sense of purpose increasing productivity among poorer farmers versus increasing aggregate output could also enhance the targeting performance

comparing cash and voucher transfers in a humanitarian context evidence from the democratic republic of congo despite recent calls in support of cash transfers there is little rigorous evidence of the relative impacts of cash versus in kind transfers especially in humanitarian contexts where a majority of such programs take place this paper uses data from a randomized experiment in the democratic republic of congo to assess the relative impacts and costs of equivalently valued cash and voucher transfers the voucher program distorted households purchases along both the extensive and intensive margin as compared with unconstrained cash households yet there were no differences in food consumption or other measures of well being in part due to the fact that voucher households were able to resell part of what they purchased as there were no significant benefits to vouchers cash transfers were the more cost effective modality for both the implementing agency and program recipients in this context

five centuries of energy prices concerns about rising energy prices tend to occur in times of economic expansion to disappear in times of recession a recurring fear is that in the long run real energy prices will trend upwards this paper presents evidence from five hundred years of prices of energy sources for the united kingdom over this time period there is little support for any general trend of rising fuel prices and some evidence of significant declines using this information on prices and consumer expenditure to weight the series an average price of energy series has been created reflecting the substitution away from more scarce fuels driving prices down and towards more valuable ones driving prices up over more than five hundred years and albeit with significant long lived fluctuations there seems little evidence of a rising long run trend in the real price of energy

transfers in cash and in kind theory meets the data we review theoretical explanations for in kind transfers in light of the limited empirical evidence after reviewing the traditional paternalistic arguments we consider explanations based on imperfect information and self targeting we then discuss the large literature on in kind programs as a way of improving the efficiency of the tax system and a range of other possible explanations including the samaritan s dilemma pecuniary effects credit constraints asymmetric information amongst agents and political economy considerations our reading of the evidence suggests that paternalism and interdependent preferences are leading overall explanations for the existence of in kind transfer programs but that some of the other arguments may apply to specific cases political economy considerations must also be part of the story

the flypaper effect what happens to a state s spending when it receives an unconditional grant from the federal government the standard theoretical analysis predicts that the increase in spending will be the same as that generated by an equivalent increase in local incomes or roughly 5 10 percent for most states in contrast numerous empirical analyses have found that spending increases by much more with some estimates near 100 percent this result is known as the flypaper effect since the money appears to stick where it hits the authors review this evidence as well as other studies that find similar behavior in firms

what drives volatility in natural gas prices abstract we examine the primary drivers of u s natural gas price volatility to do so we apply a structural heterogeneous autoregressive var shvar model accommodating structural breaks in both the coefficient and volatility to monthly time series data on natural gas supply demand and price between january 1978 and july 2018 we detect several structural changes in coefficients and shock volatility in the natural gas market our findings indicate that the response of natural gas prices differs significantly depending on the regime and type of shock in the natural gas market while demand shocks specific to the natural gas market are the primary drivers of natural gas price volatility structural supply shocks also play a significant role in explaining movements in natural gas prices our results suggest that failure to consider structural breaks in the coefficient and volatility may result in biased estimates and distorted impulse responses of the impact of shocks on natural gas price volatility

the effect of oil price volatility on strategic investment in this paper we investigate how oil price volatility affects the strategic investment decisions of a large panel of us firms this paper uses key insights from the real options literature to develop a model of a company s strategic investment and shows how changes in oil price volatility can impact strategic investment decisions the model is estimated using recently developed generalized method of moment estimation techniques for panel data sets empirical results are presented to show that there is a u shaped relationship between oil price volatility and firm investment this is consistent with the predictions from the strategic growth options literature the results should be useful to decision makers investors managers policy makers and others who need to make strategic investment decisions in an uncertain world

is the recent low oil price attributable to the shale revolution the u s energy information administration estimates that approximately 52 of total u s crude oil was produced from shale oil resources in 2015 we examine whether the recent low crude oil price is attributable to this shale revolution in the u s using a svar model with structural breaks our results reveal that u s supply shocks are important drivers of real oil price and for example explain approximately a quarter of the 73 decline between june 2014 and february 2016 failure to consider statistically significant structural changes results in underestimating the role played by global supply shocks while overestimating the role of the demand shocks

energy and the long cycles abstract the hypothesis is submitted in this paper that energy directly or indirectly had much more to do with the generation of the long kondratiev cycles than generally recognized an attempt is made to test this and it is suggested that the next upturn may also be energy related

convertible bond design and capital investment the role of call provisions if firms issue convertible securities to facilitate sequential investment the securities should be engineered to give sufficient flexibility to accommodate timing of follow on investment we examine call provisions in convertible bonds and argue that firms with investment options expected to expire sooner later will offer weaker stronger call protection we find that issues with weak or no call protection are offered by firms that invest greater amounts soon after issuance than those issuing convertibles with strong protection moreover capital expenditure levels during the 5 year period following issuance are inversely related to the length of call protection periods most convertible bonds and notes have call provisions and most provisions have important qualifications or protection broadly speaking convertibles may have absolute protection not callable hard call protection noncallable for a specified period provisional or soft call protection callable if certain conditions on stock price are met or no protection callable anytime in this study we investigate the relations between the strength and length of call protection and firms subsequent investment behavior our hypothesis is a natural implication of the sequential financing motive for convertible debt financing for example in mayers 1998 firms finance their planned multistage investment programs with convertibles besides mayers sequential financing motive other explanations for convertible financing include theories based on post issuance risk shifting jensen and meckling 1976 green 1984 heterogeneous risk assessment brennan and schwartz 1988 and asymmetric information stein 1992 in a recent study lewis rogalski and seward 2001 offer an explanation based on equity market rationing stein s 1992 model has at least an implicit role for callability but we believe mayers explanation has direct implications for the nature of call provisions that we examine here he argues that convertible financing is well suited to

the eurobond market and corporate financial policy abstract on average significant positive abnormal returns are associated with eurobond issues during the period 1975 1985 the cross sectional and time series distributions of the abnormal returns are consistent with the hypothesis that impediments to the adjustment of asset supplies to new demand conditions are large enough to create profitable financing opportunities for firms our analysis demonstrates how profitable financing opportunities can persist on the eurobond market and when they are most likely to arise

asymmetric and nonlinear pass through of crude oil prices to gasoline and natural gas prices in this article we use the recently developed nonlinear autoregressive distributedlags nardl model to examine the pass through of crude oil prices into gasoline and natural gas prices our approach allowsus to simultaneously test the short and long run nonlinearities through positive and negative partial sum decompositions of the predetermined explanatory variables it also offers the possibility to quantify the respective responses of gasoline and natural gas prices to positive and negative oil price shocks from the asymmetric dynamic multipliers the obtained results indicate that oil prices affect gasoline prices and natural gas prices in an asymmetric and nonlinear manner but the price transmission mechanism is not the same important policy implications can be learned from the empirical findings

turbulent times uncovering the origins of us natural gas price fluctuations since deregulation abstract in this paper we investigate supply and demand shocks in the u s natural gas market focusing on how the effects of these shocks have changed over time using a sign identified structural vector autoregression svar model that allows for both time varying parameters and stochastic volatility we find that supply and demand shocks are the main drivers of natural gas price fluctuations during 1993 2015 with speculative activities playing a minor role during a portion of the sample period we also find that after the recent shale boom the supply and demand of natural gas in the us have become somewhat more elastic an examination of several volatile episodes during the sample period suggest that though natural gas price fluctuations are predominately determined by fundamental factors supply and demand shocks have significantly evolved over time

an economic model of welfare stigma perhaps the most basic assumption of the economic theory of consumer demand is that more is better than less virtually all of the major propositions of consumer theory can in a certain sense be derived from the assumption that goods are good interestingly however this tenet seems to be violated by the behavior of many individuals in the low income population for many turn out to be eligible for a positive welfare benefit but do not in fact join the welfare rolls for example it has been estimated that in 1970 only about 69 percent of the families eligible for afdc aid to families with dependent children participated in the program see richard michel 1980 the corresponding percentage for afdc u the program for which families with an unemployed male are eligible was only 43 percent and the participation rate in the food stamp program was only 38 percent see maurice mcdonald 1977 this phenomenon has puzzled many investigators because such individuals do not locate on the boundaries of their budget sets consequently most investigators ignore the problem when studying the effects of welfare programs on behavior in this paper this seemingly irrational rejection of an increase in income is modeled as resulting from welfare stigma that is from disutility arising from participation in a welfare program per se 1 the existence of stigma has been amply documented in the sociological literature patrick horan and patricia austin 1974 lee rainwater 1979 where interviews of recipients have often uncovered feelings of lack of self respect and negative self characterizations from participation in welfare nevertheless this phenomenon has not been modeled and many questions consequently remain when is the disutility of participation strong enough to prevent participation shouldn t we expect individuals to weigh the disutility of participation against the potential benefit in their decisions what is the elasticity of participation with respect to the potential benefit also in a slightly different vein how are the work disincentives of welfare affected by stigma these questions have been given scant attention by economists yet they are crucial for our ability to predict the impact of various welfare programs on the lowincome population here these questions are addressed by modeling nonparticipation as a utility maximizing decision the model is developed and estimated for the afdc program 2 the model posits an individual utility function containing not just disposable income but

quantifying the speculative component in the real price of oil the role of global oil inventories abstract one of the central questions of policy interest in recent years has been how many dollars of the inflation adjusted price of oil must be attributed to speculative demand for oil stocks at each point in time we develop statistical tools that allow us to address this question and we use these tools to explore how the use of two alternative proxies for global crude oil inventories affects the empirical evidence for speculation notwithstanding some differences overall these inventory proxies yield similar results while there is evidence of speculative demand raising the price in mid 2008 by between 5 and 14 dollars depending on the inventory specification there is no evidence of speculative demand pressures between early 2003 and early 2008 as a result current policy efforts aimed at tightening the regulation of oil derivatives markets cannot be expected to lower the real price of oil in the physical market we also provide evidence that the libyan crisis in 2011 shifted expectations in oil markets resulting in a price increase of between 3 and 13 dollars depending on the inventory specification with regard to tensions with iran in 2012 the implied price premium ranges from 0 to 9 dollars

energy markets volatility modelling using garch abstract this paper investigates the empirical properties of oil natural gas and electricity price volatilities using a range of univariate and multivariate garch models and daily data from wholesale markets in the united states for the period from 2001 to 2013 the key contribution to the literature is the estimation of trivariate bekk and dcc models that allow us to observe spillovers and interactions among energy markets we evaluate and compare the performance of univariate and multivariate models with a range of diagnostic and forecast performance tests and assess forecasting performance and conditional correlation dynamics

the effect of natural gas shortages on the mexican economy abstract the mexican economy experienced a shortage of natural gas from the second quarter of 2012 through the second half of 2013 in order to deal with this problem the state owned national supplier of natural gas pemex implemented a system that restricts the amount of natural gas used by the manufacturing sector with this information we have constructed a shortage index that represents the percentage of natural gas restricted per month in each region we quantify the effect of natural gas shortages on the manufacturing sector and gdp using a panel data model with state and time fixed effects we estimate that the natural gas shortage reduced mexican gdp annual growth rate by 0 28 percentage points in the second quarter of 2013

announcement effects of convertible bond loans and warrant bond loans an empirical analysis for the dutch market abstract this study investigates the announcement effects of offerings of convertible bond loans and warrant bond loans using data for the dutch market the event study analysis shows that announcement effects of convertible bonds are associated with positive but insignificant abnormal returns and that announcements of warrant bonds are associated with significant positive abnormal returns these findings are similar to the results for japanese hybrid debt as reported by kang et al 1995 kang j k kim y c park k j stulz r m 1995 journal of financial and quantitative analysis pp 257 270 and kang and stulz 1996 kang j k stulz r m 1996 review of financial studies pp 109 139 but they contrast with studies for the united states that generally find significant negative abnormal returns for convertible bond loans and insignificant negative abnormal returns for warrant bond loans our results cannot be attributed to differences in the corporate governance structures of the netherlands and the united states we find that the positive abnormal returns for the warrant bond loans are caused by the packaging of the announcements with other good firm specific news

historical energy price shocks and their changing effects on the economy abstract the purpose of this paper is to identify the changes in the impact of energy shocks on economic activity with an interest in assessing if an economy s vulnerability and resilience to shocks improved with economic development using data on the united kingdom over the last three hundred years the paper identifies supply aggregate demand and residual shocks to energy prices and estimates their changing influence on energy prices and gdp the results suggest that the impacts of supply shocks rose with its increasing dependence on coal and declined with its partial transition to oil however the transition from exporting coal to importing oil increased the negative impacts of demand shocks more generally the results indicate that improvements in vulnerability and resilience to shocks did not progress systematically as the economy developed instead the changes in impacts depended greatly on the circumstances related to the demand for and supply of energy sources if these experiences are transferable to future markets a transition to a diversified mix of renewable energy is likely to reduce vulnerability and increase resilience to energy price shocks

targeting transfers through restrictions on recipients our objective is to design transfer programs that maximize some social welfare function following the optimal income tax formulation we assume that a random process endows individuals with characteristics that influence welfare such as ability to earn income medical condition or unmonitorable income the goal is to maximize the utility of a randomly chosen individual other individualistic social welfare functions would lead to equivalent results if the random characteristics were observable a first best outcome could be achieved by making them the basis for lump sum transfers in practice however we can observe only indicators of these characteristics such as earnings medical expenditures or consumption patterns the challenge for policy is to design an efficient second best transfer program based on indicators in this paper we argue that 1 an optimal transfer program in general must sacrifice productive efficiency to target efficiency this is done by imposing restrictions on the choices made by intended beneficiaries 2 a program that incorporates restrictions such as means tested in kind transfers commodity specific taxes and subsidies and even ordeals i e the imposition of deadweight costs to qualify for a transfer will perform better than programs that rely solely on income taxes and cash transfers

price of oil and world inflation and recession new evidence shows that the commonly held assumption that the 1973 74 oil price increase directly affected us and world inflation and subsequent recession is consistent with the empirical data an extended lucas varro real income equation applied to the us united kingdom canada france germany italy japan and the netherlands gives mixed results partly because of price control and decontrol programs simulation experiments on the price control variable using us data finds strong effects further studies can be made when consistent international data is available for the 1979 80 period 18 references 4 figures 3 tables dck

beyond baseline and follow up the case for more t in experiments the vast majority of randomized experiments in economics rely on a single baseline and single follow up survey if multiple follow ups are conducted the reason is typically to examine the trajectory of impact effects so that in effect only one follow up round is being used to estimate each treatment effect of interest while such a design is suitable for study of highly autocorrelated and relatively precisely measured outcomes in the health and education domains this paper makes the case that it is unlikely to be optimal for measuring noisy and relatively less autocorrelated outcomes such as business profits household incomes and expenditures and episodic health outcomes taking multiple measurements of such outcomes at relatively short intervals allows the researcher to average out noise increasing power when the outcomes have low autocorrelation it can make sense to do no baseline at all moreover the author shows how for such outcomes more power can be achieved with multiple follow ups than allocating the same total sample size over a single follow up and baseline the analysis highlights the large gains in power from ancova rather than difference in differences when autocorrelations are low and a baseline is taken the paper discusses the issues involved in multiple measurements and makes recommendations for the design of experiments and related non experimental impact evaluations

asymmetric impacts of fundamentals on the natural gas futures volatility an augmented garch approach we investigated the determinants of daily volatility for natural gas nearby month futures traded on the nymex within a garch framework augmented with market fundamentals consistent with the previous literature we found that volatility is much higher on the natural gas and crude oil storage report announcement days on mondays and during winters we also confirmed that high volatility is associated with divergence of storage levels and temperatures from seasonal norms the asymmetric impact of storage levels on volatility across different seasons is empirically investigated and documented the mainstream finding in the literature that lower storage levels result in higher volatility is valid only during winter at other times it is actually higher storage levels causing higher volatility also time to maturity effect is present only in winters additionally weather shocks have asymmetric impact on volatility depending on the sign of the shock finally we found that augmentation with market fundamentals improves the out of sample forecast accuracy of standard garch models

obstacles to takeup ecuador s conditional cash transfer program the bono de desarrollo humano summary social assistance programs cannot help the poor if the poor do not enroll in them obstacles to the takeup of social assistance in industrialized countries include information costs compliance costs and psychological costs using qualitative field research and quantitative analysis of data from a nationwide survey in 2013 14 we explore the impact of these costs on the takeup of the bono de desarrollo humano bdh a us 50 monthly cash transfer in ecuador drawing on interviews with ecuadorians whose households are eligible for the bdh as well as on findings about social assistance takeup in industrialized countries we hypothesize that particular information costs compliance costs and psychological costs along with program design and household poverty will influence the probability of bdh takeup we then use probit regression to estimate the statistical effect of these factors on the probability of takeup using data on 11 449 bdh eligible households sampled by ecuador s 2013 14 encuesta condiciones de vida living standards measurement survey controlling for program design and household poverty we find that compliance costs and psychological costs each have a significant deterrent effect on bdh takeup the purpose of social assistance is to help the poor but if social assistance is to achieve this goal the poor must actually receive it this study helps to identify the forces and circumstances that influence the takeup of an important social assistance program in a middle income latin american country

the impact of the shale gas revolution on the u s and japanese natural gas markets we investigated whether the increase in the us shale gas production changed the structures of the us and japanese natural gas markets using market data for the period 2002 5 2012 5 our analysis consists of a structural break test and market integration analysis the bai and perron structural break test detected a break point of natural gas prices and consumption in 2005 as well as other external shocks hurricane katrina and the lehman shock that are irrelevant to shale gas development we eliminated the impact of these shocks by separating the data set using the breaks identified in our analysis we found the breaks skewed the estimation a market linkage existed between the us and japanese markets in the original data set while it did not in the separated data the vector autoregressive var model also indicated a significant change before and after the break point the us market had a one side influence on the japanese market before 2005 but the influence disappeared after 2005 our results implied that the shale gas revolution triggered by the increase in shale gas production in 2005 caused the change in the relationship between the us and japanese natural gas markets

what drives natural gas prices a structural var approach abstract in this study we develop a structural vector autoregressive model var for the german natural gas market our setup allows us to analyze the determinants of the natural gas price in a comprehensive framework in particular we illustrate the usefulness of our approach by disentangling the effects of different fundamental influences on gas prices during three recent supply interruptions the russian ukrainian gas dispute of january 2009 the libyan civil war in 2011 and the withheld russian exports in february 2012 our results show that the natural gas price is affected by temperature storage and supply shortfalls in the short term while the long term development is closely tied to both crude oil and coal prices capturing the economic climate and the substitution relationship between the different energy commodities

mental accounting in portfolio choice evidence from a flypaper effect this paper documents a lack of coordination between the asset allocations of different financial accounts in a household portfolio our findings are predicted by the theory of mental accounting richard h thaler 1985 1990 1999 agents sometimes make decisions about individual accounts in their portfolio without considering their other accounts the setting for our analysis is a large u s firm when an employee at this firm makes a 401 k contribution the company makes a matching contribution proportional to the employee s contribution up to a match threshold in march 2003 the firm changed its 401 k matching rules creating a natural experiment both before and after the rule change the initial allocation of participants own contribution flows was determined by the participants 1 the change in march 2003 was to the policy determining the initial asset allocation of the employer match contributions in the first regime before march 2003 the firm directed matching contribution flows entirely into employer stock this was not a binding restriction as participants could freely reallocate their match balances after matching contributions were made although in practice participants rarely did so in march 2003 the company changed its match policy requiring new enrollees to actively choose the asset allocation for both their own and match contribution flows the change between these regimes was economically neutral any allocation of balances in one regime could be replicated in the other nevertheless allocations to employer stock differed vastly across the two regimes employees who enrolled in february 2003 just before the regime change allocated 23 of their own contribution flows to employer stock since all of their match contributions were directed into employer stock this resulted in a 56 total 401 k allocation to employer stock combining the own contribution and match contribution accounts few of these february enrollees made subsequent trades to reduce their employer stock balances in either account employees who enrolled in march 2003 right after the change allocated 23 of their total own plus match contribution flows to employer stock notice that own contribution allocations to employer stock in the first regime precisely match the combined allocation of own and match contributions in the second regime 23 in both cases even though combined allocations differ greatly across the regimes these results imply that each dollar of employer stock contributed to enrollees through the match in the first regime increased the employees total holdings of employer stock by a full dollar rather than being offset by reduced employer stock holdings elsewhere or being sold off directly in other words money sticks where it hits a phrase attributed to arthur okun generating an asset allocation flypaper effect that is akin to the flypaper effects of public finance corporate finance and intra household consumption 2 after considering several explanations for the asset allocation flypaper effect we conclude that it is due in part to mental accounting our results can be explained by the following simple model in the first regime new enrollees actively allocated only their own contribution flows effectively ignoring the fact that their matching contributions were entirely directed into employer stock in the second regime the match allocation became salient because new enrollees were required to choose both their match and own contribution allocations during the enrollment process this caused enrollees to consider their entire 401 k portfolio instead of just their own contribution accounts as a result the fraction of total contributions allocated to employer stock under the second regime equaled the fraction of own contribution flows allocated to employer stock under the first regime the average participant allocated roughly one quarter of assets to employer stock in whatever accounts were salient whether the set of salient accounts was narrow regime one or broad regime two the dependence of portfolio outcomes on account salience is inconsistent with investors having a clear target asset allocation for their entire portfolio which they efficiently implement through their investment choices in accordance with much prior research we also find that investors are quite passive rarely reallocating their portfolios 3 however our central finding concerns asset allocation decisions made at enrollment a point when people have overcome their passivity and are taking action investor passivity thus cannot account for the unresponsiveness of own contribution allocations to the match allocation at enrollment under the first regime although passivity helps explain why these initial decisions are rarely reversed subsequently

price subsidies diagnostic tests and targeting of malaria treatment evidence from a randomized controlled trial author s dupas pascaline cohen jessica schaner simone abstract both under and over treatment of communicable diseases are public bads but efforts to decrease one run the risk of increasing the other using rich experimental data on household treatment seeking behavior in kenya we study the implications of this tradeoff for subsidizing life saving antimalarials sold over the counter at retail drug outlets we show that a very high subsidy such as the one under consideration by the international community dramatically increases access but nearly half of subsidized pills go to patients without malaria we study two ways to better target subsidized drugs reducing the subsidy level and introducing rapid malaria tests over the counter

has monetary policy become more effective we investigate the implications of changes in the structure of the u s economy for monetary policy effectiveness estimating a vector autoregression over the pre and post 1980 periods we provide evidence of a reduced effect of monetary policy shocks in the latter period we estimate a structural model that replicates well the economy s response in both periods and perform counterfactual experiments to determine the source of the change in the monetary transmission mechanism and in the economy s volatility we find that by responding more strongly to inflation expectations monetary policy has stabilized the economy more effectively in the post 1980 period

are shocks to natural gas consumption temporary or permanent evidence from a panel of u s states abstract this short communication examines whether or not u s natural gas consumption follows a stationary process unlike previous research that has focused on regional country or industrial sector based panel studies this study undertakes a sub national investigation of natural gas consumption for the 50 u s states levin et al 2002 im et al 2003 maddala and wu 1999 and hadri 2000 panel unit root and stationarity tests reveal that natural gas consumption is integrated of order one however once allowance is made for endogenously determined structural breaks the carrion i silvestre et al 2005 im et al 2005 and westerlund 2005 panel unit root and stationarity tests indicate that natural gas consumption is integrated of order zero discussion of the structural breaks is briefly surveyed in relation to the natural gas industry s response to legislative actions

international market integration for natural gas a cointegration analysis of prices in europe north america and japan this paper investigates the degree of integration of natural gas markets in europe north america and japan in the time period between the early 1990s and 2004 the relationship between international gas market prices and their relation to the oil price are explored through principal components analysis and johansen likelihood based cointegration procedure both of them show a high level of natural gas market integration within europe between the european and japanese markets as well as within the north american market at the same time the obtained results suggest that the european respectively japanese and the north american markets were not integrated

market integration and price transmission in the u s natural gas market from the wellhead to end use markets abstract examination of the upstream downstream pricing behavior in u s natural gas industry reveals that a natural gas markets are integrated but subject to regime shifts and asymmetric adjustments suggesting market imperfections b demand and supply side shocks play important roles in determining short run price movements as evidenced by tests of causality and impulse response functions c the response of end use prices to deviations from equilibrium with wellhead prices vary electrical industrial and city gate prices adjust fast while commercial and residential prices adjust slowly consistent with the role of administered pricing in later markets d long run variations in end use prices are primarily due to their own shocks while long run variations in wellhead prices are due to innovations in residential and electrical prices these findings point to the importance of demand shocks as the primary determinant of natural gas prices in the long run

oil demand shocks reconsidered a cointegrated vector autoregression abstract we reconsider the conclusions about the importance of oil demand shocks and the unimportance of supply shocks reported by kilian 2009 we investigate whether the proxy for worldwide real economic activity dry bulk maritime freight costs represents anything more than transportation costs by analyzing the relation between these costs and oil prices the meaning of this variable is critical because transportation costs appear on both sides of the equations estimated by kilian directly as dry bulk maritime freight costs and as part of the measure for oil prices we also investigate the effects of representing oil supply with an aggregate of opec and non opec production because they likely use different criteria to chose output finally we investigate kilian s use of the first difference of supply while the other variables in his model are represented as levels the results suggest that opec and nonopec nations use different criteria to set output and that reductions increases in opec production raise lower oil prices the elements of the cointegrating relations their loadings and impulse response functions suggest that the positive relation between dry bulk maritime freight costs and oil prices simply represents the effect of higher oil prices on transportation costs sensitivity analyses suggest that these differences are caused by including transportation costs in the measure of oil prices aggregating opec and non opec productions and using a very long lag length to estimate the var together these results suggest that conclusions about the importance of demand shocks and the unimportance of supply shocks are not robust to alternative specifications that are consistent with many empirical findings about the world oil market

cash or condition evidence from a cash transfer experiment this brief summarizes the results of a gender impact evaluation study entitled cash or condition evidence from a cash transfer experiment conducted from 2008 to the end of 2009 in malawi the study observed the impact of conditionality in cash transfer programs with two distinct interventions unconditional transfers uct arm and transfers conditional on school attendance cct arm targeted at adolescent girls in malawi on individual level dropout rates declined in both treatment arms however the uct arm is 43 percent as large as the cct arm the fraction of days attended in the cct arm is significantly higher than the uct cognitive ability math and english scores significantly improve for the cct but not for the uct probability of pregnancy and marriage were much lower in the uct arm the delays in marriage and fertility in the uct arm are found entirely among adolescent girls who dropped out of school after the start of the intervention improvements in human capital for the recipients of the cct are achieved at the cost of worse outcomes for people who drop out of school funding for the study derived from the global development network bill and melinda gates foundation national bureau of economic research nber africa project world bank research support budget grant world bank knowledge for change trust fund world development report 2007 small grants fund spanish impact evaluation fund and gender action plan trust fund

direct and indirect effects of malawi s public works program on food security labor intensive public works programs are important social protection tools in low income settings intended to supplement income of poor households and improve public infrastructure in this evaluation of the malawi social action fund an at scale government operated program across and within village randomization is used to estimate effects on food security and use of fertilizer there is no evidence that the program improves food security and some negative spillovers to untreated households these disappointing results hold even under modifications to the design of the program to offer work during the lean rather than harvest season or increase the frequency of payments

resources as a constraint on growth for a considerable part of its history the american economy has functioned as a cowboy economy it has been a cowboy economy in the sense that there have been no important resource constraints on growth this is not to say that land minerals and a clean environment have been freely available rather agricultural land could be obtained at roughly constant costs most essential minerals have been present at fairly high grade in considerable abundance and the environment could be used as a sink without becoming fouled in the last several decades however cropland has stayed almost constant some high grade mineral deposits have been exhausted and the carrying capacity of our environment has been strained the scarcity of resources has led many to argue that the operating rules of our economy must change whereas in the cowboy economy we could afford to use our resources profligately the new view of economic growth is that the closing of all our frontiers means that we are now operating in a spaceship economy in a spaceship economy great attention must be paid to the sources of life and to the dumps where our refuse is piled things which have traditionally been treated as free goods air water quiet natural beauty must now be treated with the same care as other scarce goods it would seem difficult to question the observation that the world economy is progressing toward a closed system many have carried this observation further describing a future imperiled by famine depleted of essential materials running out of energy or choking in its own exhaust fumes behind these pessimistic visions is a deeper skepticism about the very fruits of economic growth economists have for the most part ridiculed the new view of growth arguing that it is merely chicken little run wild i think that the new view of growth must be taken seriously and analyzed carefully what have we learned about the new view the first set of studies relates to theoretical investigations by theoretical i mean propositions based on largely untested assumptions about model structure perhaps hypothetical would be a more accurate term in this category belong the celebrated writings sponsored by the club of rome as well as many offshoots of this work jay forrester dennis h meadows et al these works have demonstrated that under certain conditions involving technology population and resource availability a sustained growth path for consumption is not possible the conclusions of these works have not generally been accepted by economists because of the dubious nature of many of their assumptions in particular the assumptions regarding population growth and technology are quite unsatisfactory several authors have shown that the conclusions of these models are not robust to minor modifications in structure thus r boyd showed that introducing a new factor called technology would drastically alter the model s path my work 1973a showed that any of three changes in model structure ongoing technological progress adequate factor substitution or population decline would lead to opposite and more optimistic results it should be stressed however that all yale university

the cost of natural gas shortages in ireland this paper investigates the economic implications of disruptions of one to ninety days to the supply of natural gas in ireland we assess the impact of a hypothetical gas supply disruption in both winter and summer in 2008 with observed market characteristics and in 2020 with projected market characteristics the cost of a natural gas outage includes the cost of natural gas being unavailable for heating and other purposes in the industrial and commercial sectors lost consumer surplus in the residential sector the cost of lost electricity in all sectors and lost vat on the sale of gas and electricity ireland generates much of its electricity from natural gas and the loss of this electricity accounts for the majority of the cost of a natural gas outage losing gas fired electricity would cost 0 1 1 0 billion euro per day depending on the time to the week the time of year and rationing industry should be rationed before households to minimise economic losses but current emergency protocols do the opposite if gas fired electricity is unavailable for three months the economic loss could be up to 80 billion euro about half of gross domestic product losing gas for heating too would add up to approximately 8 billion euro in economic losses we also discuss some options to increase ireland s security of supply and find that the cost is a small fraction of the avoided maximum damage

were there regime switches in u s monetary policy working paper 2004 14 june 2004 abstract a multivariate model identifying monetary policy and allowing for simultaneity and regime switching in coefficients and variances is confronted with u s data since 1959 the best fit is with a model that allows time variation in structural disturbance variances only among models that also allow for changes in equation coefficients the best fit is for a model that allows coefficients to change only in the monetary policy rule that model allows switching among three main regimes and one rarely and briefly occurring regime the three main regimes correspond roughly to periods when most observers believe that monetary policy actually differed and the differences in policy behavior are substantively interesting though statistically ill determined the estimates imply monetary targeting was central in the early 80s but was also important sporadically in the 70s the changes in regime were essential neither to the rise in inflation in the 70s nor to its decline in the 80s jel classification e52 e47 c53 key words counterfactuals lucas critique policy rule monetary targeting simultaneity volatility model comparison i the debate over monetary policy change in an influential paper clarida gali and gertler 2000 cgg presented evidence that us monetary policy changed between the 1970 s and the 1980 s indeed that in the 70 s it was drastically worse they found that the policy rule apparently followed in the 70 s was one that when embedded in most stochastic general equilibrium models would imply non uniqueness of the equilibrium and hence vulnerability of the economy to sunspot fluctuations of arbitrarily large size their estimated policy rule for the later period on the other hand eliminated this indeterminacy these results are a possible explanation of the volatile and rising inflation of the 70 s and of its subsequent decline the cgg analysis has two important weaknesses one is that it fails to account for stochastic volatility us macroeconomic variables and particularly the federal funds rate have gone through periods of tranquility and of agitation with forecast error variances varying greatly from period to period ignoring such variation does not lead to inconsistent estimates of model parameters when the forecasting equations themselves are constant but it strongly biases toward a finding of changed parameters tests of the stability of the forecasting equations the other weakness is that the cgg analysis rests on powerful and implausible identifying assumptions they require that we accept that the response of the monetary authority to expected future inflation and output does not depend on the recent history of inflation money growth or output it is hard to understand why this should be so especially in the 70 s when monetarism was a prominent theme in policy debates congress was requiring reports from the fed of projected time paths of monetary aggregates and financial markets were reacting sensitively to weekly money supply numbers the requirement for existence and uniqueness of equilibrium in dynamic models is that the monetary policy rule show a more than unit response of interest rates to the sum of the logs of all nominal variables that appear on the right hand side of the reaction function if we force a particular measure of expected future inflation to proxy for all the nominal variables that actually appear independently in the reaction function we are bound to get distorted conclusions on the one hand because expected future inflation will be a noisy measure of the full set of nominal influences on policy we might get downward bias in our estimates from the usual errorsin variables effect on the other hand to the extent that expected future inflation like most expected future values shows less variation than current nominal variables we could find a mistaken scaling up of coefficients

changes in the global oil market changes in the parameters of a recursively identified oil market model are examined through an iterative algorithm that tests for possible breaks in coefficients and variances the analysis detects breaks in the coefficients of the oil production and price equations together with volatility shifts in all three equations of the model coefficient changes imply an enhanced response of production to aggregate demand shocks after 1980 and that the price response to supply shocks is more persistent from the mid 1990s all variables evidence changes in the relative contributions of individual shocks to their forecast error variances with coefficient and volatility breaks in the first half of the 1990s being particularly important in this respect the results show that analysts of this market should eschew constant parameter models estimated over an extended period

downstream integration of natural gas prices across u s states evidence from deregulation regime shifts abstract this study examines the cointegration between city gate and residential retail natural gas prices at the u s state level using monthly data from 1989 1 to 2012 12 both price series are tested for unit roots using the harris 2009 procedure to endogenously identify structural breaks related to deregulation associated with ferc order no 636 the endogenously determined structural breaks are then used in the saikkonen and lutkepohl 2000a 2000b 2000c maximum likelihood approach to test cointegration of the series tests show cointegration of the two price series for all 50 states estimates of the long run relationship in the pre and post structural break periods result in mixed evidence about the degree of perfect market integration induced by deregulation although the magnitude and variation of parameters indicate increased integration a vector error correction model is used to infer causality in the short and long run dynamics for the pre and post structural break periods for each state the post break period exhibits bidirectional causality in both short and long run dynamics for all states an indication of greater downstream integration of the natural gas market

how does the u s natural gas market react to demand and supply shocks in the crude oil market abstract in this paper we use monthly data over the period from january 1976 to december 2012 and a structural var model to disentangle demand and supply shocks in the global crude oil market and investigate their effects on the real price of natural gas in the united states we identify the model by assuming that innovations to the real price of crude oil are predetermined with respect to the natural gas market and show that close to 45 of the variation in the real price of natural gas can be attributed to structural supply and demand shocks in the global crude oil market

what drives natural gas prices in the united states a directed acyclic graph approach abstract this study investigates the impacts of driving factors for natural gas prices during the period from 1999 to 2017 a data driven approach namely the directed acyclic graph dag is first employed to disclose the contemporaneous relations among natural gas crude oil and various factors the main results indicate that there is a stable contemporaneous causal flow from crude oil to natural gas unlike most of the previous research we found a long term equilibrium relationship between crude oil and natural gas returns when additional factors were taken into account however the impact of oil price returns on natural gas price volatility has decreased after the 2008 global financial crisis finally storage and seasonality factors can never be ignored when analysing natural gas prices while the impact of speculative activity on natural gas volatility is relatively weak

an analysis of the wealth effects of japanese offshore dollar denominated convertible and warrant bond issues offshore dollar denominated equity linked issues were a more important source of funds for japanese companies during the 1980s than domestic equity and straight debt issues combined using a sample of japanese equity linked offshore issues from 1977 to 1989 we find that the announcement of these issues is accompanied by a significant positive abnormal return this contrasts with evidence that u s equity linked issues have a significant negative stock price reaction we provide an explanation for the difference in stock price reactions between u s and japanese issues that is based on the greater influence on managers security issue decisions of long term investors and banks in japan than in the u s

world crude oil and natural gas a demand and supply model abstract this paper examines world markets for crude oil and natural gas over the period 1918 1999 it analyzes the time series properties of output and prices and estimates demand and supply elasticities during 1918 1973 and 1973 1999 oil and gas prices were stable during the first period they became volatile afterwards reflecting deep changes in the market structure following the oil shock in 1973 demand price elasticities were too low however demand income elasticities were high supply price elasticities were also too low the elasticity estimates help to explain the market power of the oil producers and price volatility in response to shocks and corroborate elasticity estimates in energy studies

the role of underground storage in the dynamics of the us natural gas market a threshold model analysis abstract natural gas is an important source of energy in the global economy hence understanding the drivers of its prices is of significant interest for the many economic agents this paper investigates the role of inventories for the dynamics of the u s natural gas market our contribution is twofold first within the threshold structural var framework we demonstrate that in a low inventory regime spot prices are more responsive to economic fundamentals in comparison to situation in which the inventories are high second we present evidence that the level of natural gas inventories have a significant effect on the relationship between spot and futures prices