convergence to the law of one price without trade barriers or currency fluctuations using a panel of 51 prices from 48 cities in the united states we provide an upper bound estimate of the rate of convergence to purchasing power parity we find convergence rates substantially higher than typically found in cross country data we investigate some potentially serious biases induced by i i d measurement errors in the data and find our estimates to be robust to these potential biases we also present evidence that convergence occurs faster for larger price differences finally we find that rates of convergence are slower for cities farther apart however our estimates suggest that distance alone can only account for a small portion of the much slower convergence rates across national borders

the impact of integrated aquaculture agriculture on small scale farms in southern malawi sustainable agricultural intensification is an urgent challenge for sub saharan africa one potential solution is to rely on local farmers knowledge for improved management of diverse on farm resources and integration among various farm enterprises in this article we analyze the farm level impact of one recent example namely the integrated aquaculture agriculture iaa technologies that have been developed and disseminated in a participatory manner in malawi based on a 2004 survey of 315 respondents 166 adopters and 149 nonadopters we test the hypothesis that adoption of iaa is associated with improved farm productivity and more efficient use of resources estimating a technical inefficiency function shows that iaa farms were significantly more efficient compared to nonadopters iaa farms also had higher total factor productivity higher farm income per hectare and higher returns to family labor

the impact of agricultural research in africa aggregate and case study evidence abstract this paper presents case study results and aggregate data to evaluate the impact of research in african agriculture of 32 case studies all but eight report annual returns over 20 and many are far higher with most gains arising in the late 1980s and 1990s spurred by policy reforms and changing incentives these innovations have led to sustained growth in aggregate cereal crop yields since 1985 africa s belated green revolution is based on new varieties often with early maturation for drought escape complemented by new management techniques typically labor intensive efforts to conserve soil moisture and build soil fertility

state lottery adoptions as policy innovations an event history analysis two types of explanations of state government innovation have been proposed internal determinants models which posit that the factors causing a state government to innovate are political economic and social characteristics of a state and regional diffusion models which point toward the role of policy adoptions by neighboring states in prompting a state to adopt we show that the two are conceptually compatible relying on mohr s theory of organizational innovation then we develop and test a unified explanation of state lottery adoptions reflecting both internal and regional influences the empirical results provide a great degree of support for mohr s theory for the empirical analysis we rely on event history analysis a form of pooled cross sectional time series analysis which we believe may be useful in a wide variety of subfields of political science event history analysis may be able to explain important forms of political behavior by individuals organizations or governments even if they occur only rarely

state lotteries and consumer behavior abstract this paper investigates two central issues regarding state lotteries first analyses of multiple sources of micro level data demonstrate that household lottery spending is financed primarily by a reduction in non gambling expenditures not by a reduction in expenditures on other forms of gambling the introduction of a state lottery is associated with an average decline of 46 per month or 2 4 percent in household non gambling expenditures low income households reduce non gambling household expenditures by 2 5 percent on average 3 1 percent when the state lottery includes instant games these households experience statistically significant declines in expenditures on food and on rent mortgage and other bills second consumer demand for lottery products responds positively to the expected value of the gamble controlling for other statistical moments and product characteristics including the nominal top prize amount this finding is consistent with informed choice among consumers of lottery products although other forms of irrational or misinformed choice cannot be ruled out

the who and why of lottery empirical highlights from the seminal economic literature lotteries operate today in many countries around the world this type of gambling is usually run by governments and is sometimes described as regressive lottery is an unfair bet so explaining the purchase of lottery tickets by risk averse consumers has been a challenge for economic theory lotteries can be analysed from either of two economic perspectives as a source of public revenue or as a consumer commodity in this paper the state of economic research on lotteries is reviewed focusing on its main empirical findings

factors influencing the adoption of state lotteries this paper explores the factors influencing the adoption of state lotteries in the united states the conceptual framework utilizes a common utility framework in which a representative legislator maximizes utility derived from the current and expected fiscal position of a state subject to a political constraint the empirical results support the theoretical hypotheses including the finding that changes in the fiscal health of the state the predicted profit potential of a lottery and the political climate of the state all affect the likelihood that a lottery is adopted by introducing a sound conceptual framework using better data than used in previous studies utilizing an appropriate estimation technique and obtaining strong results this study advances our knowledge of why states adopt lotteries

returns from research in economies with policy distortions hybrid sorghum in sudan conventional estimates of the economic return to agricultural research use market prices for the values of products and inputs on this basis economic rates of return are typically well above the cost of capital suggesting that more investment in research would be socially desirable but these estimates may be incorrect if as is often the case market prices are distorted by market failures or government policies and hence do not reflect social values this paper presents a simple partial equilibrium methodology with which to improve the measurement of social returns to research by taking account of multiple distortions in the market prices of products inputs and foreign exchange the method also takes account of variation in domestic and world prices making a product tradable in some years and nontradable in others the method is applied to the case of hageen dura 1 hd 1 sub saharan africa s first commercially successful hybrid sorghum hd 1 was released in the sudan in 1983 from the start of research in 1979 to 1992 the hd 1 breeding program had an estimated irr of 97 when all major policies in the sorghum market the fertilizer market and the exchange rate are taken into account the high rate of return to hd 1 research was due to the program s low cost and rapid payoff pointing to the potential value of small adaptive research programs taking full advantage of foreign technology and genetic material to produce locally appropriate crosses in a short period of time even in the highly distorted economies of africa such programs can yield very high payoffs

state government expenditure determinants and tax revenue determinants revisited the primary aim of the research was to test the general hypothesis that many institutional and political variables affect fiscal outcomes that the preferences of public officials and the decision processes used to act on those preferences matter state government data state only not state and local from 1980 1985 and 1990 were used to specify state tax revenue and expenditure models a previous merrifield 1991 state tax revenue model identified many significant institutional and political variables but it was based only on 1985 data 49 observations the larger data set 147 observations including better data for some of the variables indicated that most of merrifield s 1991 findings are robust the state expenditure models facilitated a second test of the general institutional and political variable hypothesis as well as the hypotheses about specific variables the expenditure model also facilitated comparisons of expenditure and tax determinants and comparisons with results published in the literature though there are some noteworthy differences between the expenditure and tax models the expenditure models also supported many of the institutional and political variable hypotheses

regional integration in china a statistical model abstract we illustrate that a statistical model can be used to gauge the degree of market integration the model is applied to the case of china which is undergoing transition from a central planning to a market economy and there is a growing interest as to the evolution of its market integration

returns to policy oriented agricultural research the case of barley fertilization in syria summary in 1984 icarda and its syrian partners initiated farming systems research that led to a change in national fertilizer allocation policy evidence is assessed on the policy influence of the fertilizer response research and on the impact of switching to a more inclusive policy that relaxed the government s probation of fertilizer allocation to barley interviews with key informants make a persuasive case for attribution estimates from economic surplus models are consistent with a high rate of return on investment in the policy oriented research this case study provides a contribution to the limited empirical literature on returns to research under policy distortions

state lotteries as a source of revenue a re examination most of the academic literature that has examined state lotteries has had a negative assessment of them studies of lotteries as a source of revenue have reported that even under the best circumstances they generate only a tiny proportion of a state s revenues and the lottery revenues are so volatile that states cannot and should not be dependent on them in addition the general consensus is that lotteries have high administrative costs and that they may reduce other sources of state revenue 1 in contrast to this negative view prevalent in the academic literature lotteries have been exceedingly popular with policymakers in state capitals and among the general public most of the literature which casts a negative light on lotteries as a revenue source looked at data through the mid 1980s since then the number of states operating lotteries has grown from 17 in 1985 to 33 in 1992 in only one state north dakota during the past 30 years has a lottery referendum failed to achieve a majority of votes 2 why are lotteries so popular is it because voters are ill informed and unsophisticated do proponents mistakenly believe that they will help cure government revenue shortfalls or is it possible that lotteries really do have a significantly favorable fiscal impact that lottery revenues are not as small and destabilizing as the academic literature maintains

actual versus virtual employment in europe is spain different we study the evolution of sectoral employment and labor cost in eleven european countries in the last two decades our statistical approach consists in decomposing for country industry and temporal effects virtual economies are constructed by filtering country effects we find that sectoral effects account for more than 80 of the long run differentials across countries and industries in employment growth whereas countryspecific effects are more important in the analysis of labor cost dynamics the initial distribution of labor across sectors plays a crucial role in explaining cross country differences on employment we pay special attention to spain the country that has experienced a higher persistent unemployment rate and show that this can be the effect of a severe problem of sectoral reallocation originating from the very high weight of the agricultural employment in 1975 our study of the virtual economies also provides new evidence about the relative performance of some industries and or countries e g the poor performance of belgium the relatively good performance of italy in particular its textile sector etc

economies of scale and the volume of intra industry trade abstract using a model of monopolistic competition with traded and non traded goods this paper establishes a positive link between scale economies the volume of intra industry trade and the share of trade in total production these results are consistent with empirical findings

intra national trade costs assaying regional frictions abstract the effects of intra regional inter regional and international frictions on the trade flows of canada s provinces are disentangled by gravity model techniques unexplained trade barriers utbs are the difference between inter provincial trade barriers inferred from pair fixed effects and from bilateral distance and contiguity the estimates reveal large intra national trade costs and utbs that vary significantly across canada s provinces decomposition of utbs into relative border effects and a systematic residual utb is based on a novel cobb douglas aggregator of intra provincial and pure inter provincial trade costs variation of both components across provinces is big

intranational business cycles in the united states abstract we established a comprehensive set of stylized facts for intranational business cycles across states and regions in the u s notable findings are that the cross correlations of our consumption measure is much less than that for output and the volatility of the real exchange rate between states is much less than that for output these findings are contrasted with the quantity and price anomalies found in international business cycle data additional results for labour and non labour earnings suggest that the observed amount of intratemporal risk sharing is quite limited as compared to that for intertemporal risk sharing

impacts of food crop improvement research evidence from sub saharan africa abstract the paper reviews and summarizes evidences of impacts of crop improvement research of major food crops in africa it provides evidence of increased availability of improved varieties of major food crops to farmers in africa increased food production in regions where adoption has occurred and positive returns to research investment indicating that agricultural research in africa has had productivity increasing impacts on its agriculture however research impacts vary considerably across countries and regions within a country as a result of agroclimatic factors and policy environment which affects the supply of seeds and other inputs and the continuity and stability of research investments the paper points to a number of important issues both internal and external to the agricultural research system organization that need to be addressed if agricultural research is to provide a stimulus for modernizing african agriculture given the small size of food crop production area in many african countries it is important for research systems to take full advantage of research spill ins from regional and international research organizations there is a great potential to increase the efficiency of research systems by improving the coordination among members of national research systems and continuing improvements in collaborations between narss and regional and international organizations

trade policy review for china continuing globalisation amidst the world financial crisis the 2008 world financial crisis had led many industrialised countries to endure a significant decline in their gdps though the chinese government arranged a 4 trillion rmb stimulus package coupled with 30 trillion rmb of new bank credits in 2008 2010 to mitigate the impact of the world financial crisis the growth of china s international trade declined to a single digit level after 10 years of rapid growth at more than 20 per annum since its wto accession the latest wto trade policy review for china is a timely piece of literature which provides excellent information on china s current economic situation its trade and investment policies and government s priorities of policy support in this article we intend to reveal the latest development in the chinese economy from the second half of 2011 and to predict what it may happen in the next a couple of years china s determination to go global has not faded and china can only become more open in the future

comparisons of business cycles in the ec idiosyncracies and regularities annual data since 1960 and the real business cycle model as a guidance the evidence suggests that there are remarkable similarities between the business cycle pattern of these countries despite significant differences in the patterns of fiscal and monetary policies and the terms of trade we take this evidence to suggest that the type of shocks and the propagation mechanism is fairly similar across the ec countries hence the process of european integration under a set of uniform institutions and policies should not be a problem as far as the business cycle is concerned

the economics of casino taxation in this article a model of the costs of a casino is developed that focuses on the implications for economic welfare of different taxation schemes for casinos the situation being considered is in a country where casinos cater exclusively to foreign tourists the goal of the country is to determine the maximum amount of taxes that can be extracted from the activities of this sector under different systems of taxation when the price of gambling is set by regulation above its competitive level the economic losses created by excessive investment in the sector can be reduced by taxation a turnover tax on the amount gambled can maximize both tax revenue and the economic welfare of the country due to administrative constraints a number of countries rely on the taxation of the casinos fixed assets or a combination of a turnover tax and a tax on fixed costs the model is applied to the situation in north cyprus the annual economic efficiency loss from its poorly designed tax policies on casino gambling is

lotto nothing the budgetary impact of state lotteries lottery revenues are often touted as an independent revenue source for states using 32 years of state financial data the fallacy of such thinking is demonstrated being the first to control for the self selection of being a lottery state it is found that overall tax revenues decline with increased lottery sales moreover it is discovered that this decline is driven by a decrease in revenues from general sales and excise taxes which is only partially offset by increases in income tax receipts such findings are attributed to a combination of behavioural and political responses following the lottery s implementation

no razor s edge reexamining alwyn young s evidence for increasing inter provincial trade barriers in china abstract alwyn young 2000 argues that barriers to interprovincial trade in china have increased during the reform period this paper critically examines each of his five arguments and the evidence he presents in all five instances the argument is problematic and the evidence not robust a comparison with the united states shows the chinese evidence to be well within the range of that of a normal relatively integrated large economy

willingness to pay and the demand for lotto why do many bettors participate in an unfair gamble in particular a lotto game while at the same time purchase insurance the willingness to pay for lotto is analysed to find a rational explanation for a local risk averter s participation in an unfair bet a reasonable case is found where bettors preference can be approximately characterized as a locally risk averse and sufficiently prudent cubic function such bettors dislike risk but prefer standard third moment of the payoff the result suggests that the traditional effective price for lotto demand may omit important explanatory variables we thus propose an alternative method to examine the demand for lotto by incorporating the second and the third moments of lotto s payoff evidence from taiwan lotto data supports that lotto bettors could be both locally risk averse and rational

business cycles under monetary union a comparison of the eu and us reserve districts in the usa and the 15 countries that make up the eu the comparison is suggestive of what might be expected to emerge in the way of business cycle synchronization from a monetary union between the member states of the eu now simply non decimal denominations of the euro and the national central banks of the 11 are branches of the european system of central banks many prominent observers doubted that europe would ever reach this stage and many continue to believe that monetary union between such a large and dispar ate group of countries is fundamentally unsound a key element in the argu ments of many critics of emu is the degree of business cycle asynchronicity between the member states of the eu this paper contributes to the ongoing debate by documenting key differences and similarities between business cycles in the eu and business cycles in the 12 federal reserve districts in the united states the practice of looking to the us experience for insights into the problems and functioning of a monetary union has a long precedent in the literature on fixed exchange rates in general and in the literature on emu in particular for example in making an argument for fixed exchange rates rolnick and weber 1994 note that the usa can be viewed as having a system of fixed exchange rates between currencies issued by the 12 regional federal reserve banks they argue that the notes issued by the 12 banks are not strictly ident ical and that the difference between the notes creates the possibility that the united states could have a system of floating exchange rates among the 12 federal reserve districts 1 rolnick and weber go on to examine the features of the relationship among the 12 regional federal reserve banks that make a system of fixed exchange rates between them feasible in the process drawing lessons for how a monetary union among the countries of the eu might work the analysis in this paper complements earlier analyses in a number of ways the resurgence of interest in business cycle research over the past 20

a discrete time hazard model of lottery adoption this paper uses conventional logit probablitities to estimate a discrete time hazard model of lottery adoption the data set consists of a time series of cross sections on states in the us our findings suggests that politicians are more likely to support the decision a lottery is more likely to be adopted of ther is a favourable climate for gambling in the state and if a bordering state has adopted a lottery

market distortions and benefits from research the benefits from cost reducing research and their distribution under a range of price policies are compared with those that would arise in the absence of the policies while any price policy affects the distribution of research benefits the net national or world benefits may be reduced lef unchanged or increased depending on the nature of the policy and the significance of the country in the world market for the commodity some implications for decisions on price policies and for distortions in incentives for the allocation of resources to research are raised

the calculation of returns to research in distorted markets reply abstract most of the emperical literature calculating rates of return to publicly sponsored research assumes that research is the only relevant government intervention for most countries this assumption is untenable this paper shows that improperly measuring government inducedmarket distortions can severely bias research rate of return calculations if the interaction between successful research and other government interventions increases the cost of the other interventions then neglecting market distortions unambigously increases the calculated rate of return three examples of government induced distortions show that the magnitude of the upward bias in calculated rates of return can be extremely large in some cases more than 100 percentage points a normative implication is that governments should account for interactions between research and price interventions when determining research support levels a positive implication is that existing government research funding patterns are more readily explainable as reasonable behavior by a government that accounts for these interactions

genetic improvements in major us crops the size and distribution of benefits the distribution of welfare gains of genetic improvements in major us crops is estimated using a world agricultural trade model multi market welfare estimates were 75 larger than estimates based on the price exogenous change in revenue method frequently used by plant breeders annual benefits of these genetic improvements range from us 400 600 million depending on the supply shift specification of this 44 60 accrues to the us 24 34 accrues to other developed countries developing and transitional economies capture 16 22 of the welfare gain the global benefits of a one time permanent increase in us yields are us 8 1 billion discounted at 10 and us 15 4 billion discounted at 5 gains to consumers in developing and transitional economies range from us 6 1 billion 10 discount rate to us 11 6 billion 5 discount rate

tax competition and tax structure in open federal economies evidence from oecd countries with implications for the european union tax competition arguments suggest that governments that operate in an open economy such as local governments should not and will not rely on non benefit taxes such as the income tax yet we observe reliance on income taxes by local governments in many countries and such reliance changes over time evidence from a panel data set of 13 oecd countries over the period 1975 1984 suggests that competition between levels of government resulting in a vertical fiscal externality and between levels of government at the same level resulting in a horizontal fiscal externality provide some economic rationale for these changes moreover the evidence indicates that the vertical and horizontal fiscal externalities interact these results have some interesting implications for fiscal policy in the european union particulary as the eu continues to evolve one implication for the eu is that enlargement that increases tax base disparities within the eu and is not accompanied by an eu level income tax will tend to lower national income tax rates although this must be qualified because it also depends on the mobility of the population a second implication is that fiscal expansion of the eu to include an eu levelincome tax may tend to lower the reliance of national governments on income taxes through the vertical externality but may also tend to equalize tax bases across countries and so increase reliance on national income taxes through the horizontal externality

jackpot promotion model for taiwan lotto lotto was inaugurated in january 2002 and immediately became a popular activity in taiwan as the big craze following its initial introduction has subsided the growth of lotto game sales has slowed to maintain lottery sales momentum operators have conducted numerous jackpot promotions this study examines the effectiveness of various jackpot promotional strategies the analytical results can provide a valuable reference for operators and governmental authorities regarding ways of increasing lottery earnings the empirical findings of this investigation include the following 1 the effective price elasticity of lotto is 0 382 taipei fubon bank can increase the revenue gained from lotto by increasing the effective price 2 operators can significantly increase lottery sales by declaring the jackpot as an unconditional added fixed or variable bonus

estimating overall returns to international agricultural research in africa through benefit cost analysis a best evidence approach this study offers a best evidence approach to summarizing recent benefit cost analyses of international agricultural research in africa first from an extensive literature review and the resulting global inventory of impact studies 23 studies are identified that calculate aggregate rates of return for consultative group on international agricultural research cgiar and partner investments in sub saharan africa ssa these studies are then appraised against a review framework consisting of principles criteria and indicators for study rigor subsequently the economic benefits reported by studies grouped on the basis of its analytical rigor are aggregated and set against total investment by the cgiar and national agricultural research systems to determine if the total investment to date can be justified by documented benefits under a range of assumptions as a result the study finds that aggregate investment is justified under a fairly wide range of suppositions under all scenarios the vast majority of documented benefits stem from a relatively limited array of activities with a majority of benefits stemming from biological control 80 close to 20 of total benefits result from crop genetic improvement and less than 1 result from all other activities the implications of these results for research investment strategies in ssa and impact assessment are discussed

will regional economic integration influence carbon dioxide marginal abatement costs evidence from chinese panel data with frequent trade and technology diffusion the barriers between regions are gradually weakening and regions have become more integrated over recent years regional economic integration not only stimulates labour mobility but also achieve scale economy both of which may also influence carbon dioxide co2 marginal abatement costs through affecting energy consumption co2 emissions productivity growth and technical progress nevertheless to the best of our knowledge none of the studies has currently concerned the influence of regional economic integration on co2 marginal abatement costs to fill this research gap this study first theoretically clarifies the influence mechanism of regional economic integration on co2 marginal abatement cost and then empirically attempts to investigate their relationship in the context of china with panel data models to serve this purpose the provincial co2 marginal abatement cost and regional economic integration are estimated by parametric directional distance function and price based approach respectively the results show that china s regional economic integration level indeed gradually improved over 2002 2011 except in 2003 04 and 2006 09 due to the spread of severe acute respiratory syndrome sars and the sub prime loan crisis moreover evolution of regional economic integration indeed contributes to the increase of co2 marginal abatement cost at 5 significance level using robust tests it can be found that the results are also reliable and robust to sub samples

the law of one price evidence from the transitional economy of china abstract this paper applies the recently developed econometric methods of panel unit root tests and nonlinear mean reversion to investigate price convergence in china the largest transitional economy in the world we find that prices did converge to the law of one price in china for an overwhelming majority of goods and services based on a large panel data set the finding sheds light on the extent of the market economy in china and casts doubt on young s proposition that the economic reform has led to the fragmentation of chinese domestic markets