demand for money in open economies abstract the demand for real cash balances deduced from an underlying portfolio model of the financial market is shown to depend upon domestic variables and foreign monetary developments the model is estimated using quarterly postwar data for canada germany uk and us there is clear evidence that demand for money is affected not only by changes in domestic variables such as permanent income domestic interest rate and price expectations but also by fluctuations in exchange rate expectations and foreign interest rates the conclusion that domestic monetary policy is fairly ineffective and domestic financial markets are highly vulnerable to changes in foreign financial and monetary developments need to be modified in light of the results presented in this paper

the demand for money in an open economy the united kingdom most previous studies have estimated the demand for money without paying too much attention to developments in the foreign exchange markets in light of the fact that any development abroad and in the foreign exchange markets could have implications for domestic stabilization we make an attempt to incorporate such developments into the demand for money in the united kingdom more precisely after incorporating a measure of real effective exchange rate of the british pound into a dynamic money demand function we estimated it for the uk using quarterly data over 1973 87 period by relying upon the akaike final prediction error criteria to select the optimum number of lags it is shown that in addition to income and interest rate the real effective exchange rate exerts significant effect on the uk demand for money in the short run as well as long run

environmental quality competition and eco labeling abstract a three stage game of investment environmental quality provision and price competition is developed to study the impact of green technology investment eco labeling in a duopoly model of vertical product differentiation the firms incentives to invest in green technologies depend on their relative cost structure when firms are identical with respect to fixed costs both firms will always invest but if one firm is more efficient in investing then the other firm may or may not invest depending on the level of unit cost of investment quality competition will be tighter when the low quality firm is more efficient and looser when the high quality firm is more efficient in investing socially optimal investment for both firms is always positive but lower than in the duopoly solution in the absence of environmental externalities the quality dispersion chosen by profit maximizing firms may be too high or too low while environmental externalities increase the possibility low quality dispersion that is too low within the market solution finally and importantly ecolabeling can be used as a means of reducing excessive investment and increasing environmental quality that is too low

toward a theoretical model of voluntary overcompliance abstract we explain why some firms voluntarily overcomply with environmental regulation in our model all consumers value environmental quality but differ in their willingness to pay which depends on their income levels publicly available information on environmental performance of firms enables consumers to identify clean firms firms participate in a two stage duopoly game where they first choose their levels of cleaning technology and next engage in price competition the market gets segmented by income levels a minimum standard binding on the dirty firm has the effect of improving the performance of the cleaner firm a subsidy obtains the same competitive outcome

risk sharing networks and insurance against illness most risk sharing tests on developing country data are conducted at the level of the village generally the full risk sharing hypothesis is rejected this paper uses detailed data on all insurance networks within a village in tanzania networks are not clustered but largely overlapping we test whether full risk sharing occurs within these networks while village level full insurance cannot be rejected for food consumption we find evidence consistent with at least partial insurance of non food consumption via networks

tax incidence in differentiated product oligopoly abstract we analyze the incidence of ad valorem and unit excise taxes in an oligopolistic industry with differentiated products and price setting bertrand firms both taxes may be passed on to consumers by more than 100 percent and an increase in the tax rate can increase short run firm profits and hence the long run number of firms we provide summary conditions for these effects to arise the conditions depend on demand curvatures and are written in elasticity form surprisingly the analysis largely corroborates cournot results with homogeneous demand

social network effects on mobile money adoption in uganda abstractthis study analyses social network effects on the adoption of mobile money among rural households in uganda we estimate conditional logistic regressions controlling for correlated effects and other information sources results show that mobile money adoption is positively influenced by the size of the social network with which information is exchanged we further find that this effect is particularly pronounced for non poor households thus while social networks represent an important target for policy makers aiming to promote mobile money technology the poorest households are likely to be excluded and require more tailored policy programmes and assistance

effects of carbon taxes in an economy with prior tax distortions an intertemporal general equilibrium analysis abstract this paper analyzes the costs of carbon taxes in a model that recognizes interactions between this tax and pre existing taxes first we examine the extent to which costs of a u s carbon tax are reduced when its revenues finance cuts in income taxes such use of revenues significantly reduces but does not eliminate the overall policy costs the positive overall costs reflect the carbon tax s focus on intermediate inputs and its relatively narrow base in comparison with income taxes we also examine the sensitivity of the carbon tax s costs to the level of pre existing taxes for any given use of revenues welfare costs rise significantly with pre existing tax rates indicating that models disregarding pre existing taxes may substantially understate the costs of new environmental tax initiatives

carbon leakage from unilateral environmental tax reforms in europe 1995 2005 abstract studies of the effects of the kyoto protocol have shown carbon leakage typically from tax and permit schemes with lump sum revenues recycling to be in the range of 5 20 using static computable general equilibrium models however in practice researchers have found that carbon leakage from the implementation of the eu ets is unlikely to be substantial because transport costs local market conditions product variety and incomplete information all tend to favour local production this study investigates potential carbon leakage from six eu member states mss that implemented environmental tax reform etrs unilaterally over the period 1995 2005 the study uses the large scale multisectoral integrated energy environment economy e3 model of 27 european countries energy environment economy model of europe e3me to undertake a dynamic comparative analysis to assess any carbon leakage effects over the longer term 1995 2012 a counterfactual reference case is constructed assuming that the six countries did not introduce etrs then alternative scenarios are developed to assess the effects of the etrs including effects on co2 emissions for the eu25 economies most mss recorded a reduction in co2 emissions when comparing the baseline case to the reference case the results show that carbon leakage is very small and in some cases negative due to technological spillover effects

environmental policy in a green market this paper studies the impact of some frequently used environmental policies in a duopolistic market where purchasers are willing to pay more for less polluting goods when consumers differ in their environmental awareness a cleaner and a dirtier variant coexist in equilibrium the higher the average willingness to pay for the good the lower are variants unit emissions but the higher are industrial aggregate effluents a maximum unit emission standard reduces unit emissions of both variants but boosts firms sales and consequently increases industrial aggregate emissions as a result social welfare may be reduced we also explore the effects of technological subsidies and product charges including differentiation of charges

effects of exchange rate flexibility on the demand for international reserves abstract we incorporate a measure of exchange rate flexibility into the standard reserve demand equation and present empirical results for the 1976 1985 period which are consistent with the work of officer 1976 and frenkel and jovanovic 1981 indicating the existence of economies of scale and the demand for reserves

a note on price and quantity competition in differentiated oligopolies abstract in this note we show that the results developed in n singh and x vives 1984 rand j econ 15 546 554 are sensitive to the duopoly assumption if there are more than two firms prices may be higher under price competition than under quantity competition this will be the case if quality differences are large and goods are complements if goods are substitutes high quality firms may earn higher profits under price competition than under quantity competition hence it is not evident which kind of competition is more efficient journal of economic literature classification numbers d43 l13

mobile money agricultural marketing and off farm income in uganda mobile money mm services can contribute to welfare gains in smallholder farm households previous research showed that one important pathway for these mm related welfare gains is through higher remittances received from relatives and friends here the role of other impact pathways is examined especially focusing on agricultural marketing and off farm economic activities the analysis builds on panel data from smallholder coffee farmers in uganda regression models show that the adoption of mm technology has contributed to higher household incomes and consumption levels off farm income gains are identified to be an important pathway also beyond remittances typical off farm income sources are small businesses in trade transport and handicrafts which benefit from novel savings and money transfer opportunities through mm in terms of agricultural marketing mm users sell a larger proportion of their coffee as shelled beans to buyers in high value markets instead of selling to local traders immediately after harvest mm services help to reduce cash constraints and facilitate transactions with buyers from outside local regions in conclusion mm can contribute to rural development through various important pathways analysis of adoption patterns suggests that mm services are socially inclusive

autoregressive modelling and money income causality detection abstract a step wise procedure based on granger s concept of causality and abaike s final prediction error criterion is suggested as a practical means to identify the order of lags of each variable in a multivariate autoregressive process the model seems useful because it can serve as a reduced form formulation to avoid imposing often spurious or false restrictions of the model it also provides a reasonably powerful test of causality the idea is applied to u s postwar money and income data it is found that between m1 and gnp a bivariate feedback model fits the data best between m2 and gnp a one way causal model from money to income performs better diagnostic checks applied to our model seem to indicate the adequacy of our approach

risk sharing and transactions costs evidence from kenya s mobile money revolution we explore the impact of reduced transaction costs on risk sharing by estimating the effects of a mobile money innovation on consumption in our panel sample adoption of the innovation increased from 43 to 70 percent we find that while shocks reduce consumption by 7 percent for nonusers the consumption of user households is unaffected the mechanisms underlying these consumption effects are increases in remittances received and the diversity of senders we report robustness checks supporting these results and use the four fold expansion of the mobile money agent network as a source of exogenous variation in access to the innovation jel e42 g22 o16 o17 z13 in developing countries informal networks provide an important means by which individuals and households share risk though the insurance they provide is often incomplete economists have proposed a number of reasons for this incompleteness including information asymmetries which manifest in problems of moral hazard and limited commitment both of which induce positive correlations between realized income and consumption in this article we emphasize a complementary source of incompleteness transaction costs literally the costs of transferring resources between individuals we test the impact of transaction costs on risk sharing by analyzing data from a large panel household survey that we designed and administered in kenya over a three year period to capture the expansion of mobile money this financial innovation has allowed individuals to transfer purchasing power by simple short messaging service sms technology and has dramatically reduced the cost of sending money across large distances mobile money is a recent innovation in developing economies one of the first and most successful examples to date is kenya s m pesa 1 in just four years after its

mobile money adoption and households vulnerability to shocks evidence from togo we investigate the determinants of mobile money adoption process and whether its use helps households in togo to be resilient to predictable and unpredictable life events using ordered logit and s

climate change policy market structure and carbon leakage abstract the 1997 kyoto protocol on climate change obliges the industrialized countries to initiate the international effort of abating anthropogenic greenhouse gas ghg emissions if such an initiative is to be taken the associated competitive effects may lead to significant relocation of developed countries energy intensive production this paper examines this issue i adopt an oligopolistic structure combined with increasing returns to scale production technologies to represent the strategic interaction among the firms producing energy intensive products this representation is then embedded within a multi regional computable general equilibrium model which in turn is used for quantifying these relocational effects the results suggest that significant relocation of energy intensive industries away from the oecd may occur depending on the type of market structure with leakage rates as high as 130 in which case ghg control policies in the industrialized countries actually lead to higher global emissions

environmental taxation and strategic commitment in duopoly models in this paper we address the issue of optimalenvironmental taxation under imperfect competition the problem is analysed for three different types ofduopoly models the cournot open and closed loopmodels and the stackelberg model we explicitlyanalyse the role of strategic behaviour each firm hasto make a choice of output level and of the level ofa strategic variable the choice of this strategicvariable affects both marginal cost and emissions wecompare the properties of these three duopoly models and derive and compare optimal environmental taxes weshow that whether the optimal tax is lower or higherthan marginal environmental costs depends on theinformation transmission and the effect of thestrategic variable on marginal costs in addition thedifferences in market shares and the influence of thetax on the cost structure play important roles indetermining optimal emission taxes

mobile money financial inclusion and development a review with reference to african experience we survey literature on mobile money and its contribution in promoting financial inclusion and development with a focus on sub saharan africa we use taxonomic descriptive and analytical methods to evaluate the state of knowledge in the area we analyse how mobile technology in general may contribute to economic development and financial inclusion in theory and practise we explain the mechanics of mobile money using kenya s m pesa as a canonical example and consider whether the literature has fully established the potential economic impact of mobile money especially its contribution to financial inclusion we also consider market structure pricing and regulatory implications of mobile money we conclude by highlighting issues that require further investigation the take up of mobile money mobile money and financial inclusion substitutability between mobile money and conventional finance and regulatory structures for institutions providing mobile money services

comparing policies to combat emissions leakage border carbon adjustments versus rebates we explore conditions determining which anti leakage policies might be more effective complements to domestic greenhouse gas emissions regulation we consider four policies that could be combined with unilateral emissions pricing to counter effects on international competitiveness a border charge on imports a border rebate for exports full border adjustment and domestic output based rebating each option faces different potential legal hurdles in international trade law each also has different economic impacts while all can support competitiveness none is necessarily effective at reducing global emissions nor is it possible to rank order the options effectiveness depends on the relative emissions rates elasticities of substitution and consumption volumes we illustrate these results with simulations for the energy intensive sectors of three different economies the united states canada and europe although most controversial full border adjustment is usually most effective but output based rebating for key manufacturing sectors can achieve many of the gains

guaranteed employment or guaranteed income abstract the paper critically reviews the arguments for and against both employment guarantees and income guarantees when viewed as rights based policy instruments for poverty reduction in a developing economy decentralized implementation of the right to work poses serious challenges in poor places evidence on india s national rural employment guarantee act does not suggest that the potential for either providing work when needed or reducing current poverty is realized despite pro poor targeting instead work is often rationed by local leaders and the poverty impact is small when all the costs are considered the option of income support using cash transfers also has both pros and cons widely used methods for finely targeting cash transfers tend to miss many poor people and can discourage those reached from earning extra income yet it cannot be presumed that switching to a universal basic income will reduce poverty more than workfare or finely targeted transfers that is an empirical question and the answer will undoubtedly vary across settings belying the generalizations often heard from advocates nonetheless more incentive neutral universal and or state contingent transfer schemes merit consideration in settings in which existing public spending is skewed against poor people and or there is scope for raising taxes on the rich

carbon tax emission standards and carbon leak under price competition we consider a two country model of price competition with one polluting firm in each country and differentiated products assuming away to simplify abatement efforts and input substitution we compare the impact on output leakages and trade volumes of a carbon tax versus an emission standard policy unilaterally enacted by the home country under the tax the two firms set their prices simultaneously in a bertrand game under the standard the home firm s price is conditioned on the price of the foreign firm so as to abide the emission constraint as a result the tax leads to higher leakages and global emissions than the standard the standard also implies a better trade balance for the home country than the tax

exchange rate sensitivity of demand for money and effectiveness of fiscal and monetary policies one of the arguments between proponents and opponents of floating exchange rates centres around the relative effectiveness of fiscal and monetary policy while proponents of floating rates argue that monetary policy is more effective under floating rates its opponents contend that fiscal policy is more effective under fixed rates however economic theory suggests that there is room for both policies under both types of exchange rate system depending upon degree of sterlization concentrating on the floating rates mundell 1963 has argued that the relative effectiveness of monetary and fiscal policies would also depend upon sensitivity of money demand to exchange rate more precisely he has conjectured that the demand for money is likely to depend upon the exchange rate in addition to the interest rate and the level of income this would slightly reduce the effectiveness of a given change in the quantity of money and slightly increase the effectiveness of fiscal policy on income and employment under

the switching effect of environmental taxation within bertrand differentiated duopoly we investigate second best optimal taxation of the polluting variety of a product in a bertrand duopoly with differentiated varieties the analysis provides novel insight on a useful social function of environmental regulation besides internalizing the environmental externality the taxation of the polluting variety improves the matching of consumers and product varieties and so creates a socially desirable business switching between the differentiated varieties

transaction networks evidence from mobile money in kenya mobile money allows households in kenya to spread risk more efficiently in this paper we show that these efficiencies are achieved through deeper financial integration and expanded informal networks active networks are more geographically dispersed and support more reciprocal financial arrangements consistent with the reported reciprocity mobile money users report a higher share of transactions as being for credit and insurance purposes

emissions taxes versus intensity standards second best environmental policies with incomplete regulation the best emissions tax or emissions cap may be an inferior instrument under incomplete regulation leakage without leakage an intensity standard regulating emissions per unit of output is inferior due to an implicit output subsidy this inefficiency can be eliminated by an additional consumption tax with leakage an intensity standard can dominate the optimal emissions tax since the implicit output subsidy prevents leakage the addition of a consumption tax improves an intensity standard s efficiency may prevent leakage and may be efficient comparing intensity standards to output based updating shows that the latter dominates if updating is sufficiently flexible