estimates of effective marginal tax rates on factor incomes this chapter describes a method of calculating summary measures of effective factor income tax rates in the united states using readily available data the numbers resulting from application of this method in a study are reported in the chapter and some of their possible uses are discussed the estimated factor income tax rates behave over time in a manner quite consistent with the behavior of other broad measures of federal tax policy the postwar movement in the tax rate on income from labor relative to that on income from capital or more accurately the relevant components of these tax rates provides suggestive support for the miller scholes hypothesis that the federal personal income tax has been moving in the direction of a pure consumption tax the tax rates reported in the chapter are consistent with other studies that show a decrease since the 1950s in rates of taxation at the corporate level of income from corporate held capital they are also consistent with the view that rates of taxation of such income at the noncorporate level have risen but not quite sufficiently to offset the decline in the corporate tax burden

consumer market segments for biofortified iron beans in rwanda evidence from a hedonic testing study an understanding of consumer market segments is important for efficient and effective targeting of new technologies such as biofortified foods in this paper we use cluster analysis to identify distinct consumer segments in rwanda for four biofortified iron bean varieties data on consumer liking of various sensory attributes of beans was collected by using a 7 point hedonic scale through the application of home use and central location tests implemented in two rural and two urban locations cluster analysis reveals the existence of several distinct consumer segments in each one of the four study locations further analysis is conducted by using multinomial probit and logit models to predict consumer segment membership based on the consumer characteristics results reveal that depending on the location consumer s source of income and whether or not they received information about nutritional benefits of the iron bean varieties have a bearing on their preference of these varieties the paper presents a profile of each one of the consumer market segments identified to assist targeting of various iron bean delivery marketing and promotion efforts in rwanda

dynamic animal economics market equilibrium dynamics of herd inventory management are derived for homogenous female populations short run supply is backward bending in response to permanent changes in demand and is rising in response to transitory changes in demand increasing inventories are associated with high and falling prices and decreasing inventories with low and rising prices but there is no market instability in this these unusual intertemporal substitution effects follow from both rational expectations and appropriately formulated cobweb models and go part of the way toward explaining hog and cattle inventory cycles

the effective tax rate and the pretax rate of return abstract this paper presents new estimates of the taxes paid on nonfinancial corporate capital on the pretax rate of return to capital and on the effective tax rate the basic time series show that both the pretax rate of return and the effective tax rate have varied substantially in the past quarter century an explicit analysis indicates that after adjusting for different aspects of the business cycle pretax profitability was between one and 1 5 percentage points lower in the 1970s than in the 1960s the rate of profitability in the 1960s was also about one half of a percentage point greater than the profitability in the 7 years of the 1950s after the korean war changes in productivity growth in inflation in relative unit labor costs and in other variables are all associated with changes in profitability none of these variables however can explain the differences in profitability between the 1950s 1960s and 1970s looking at broad decade averages the effective tax rate and the pretax rate of return move in opposite directions lower pretax profits occuring when the tax rate is high there thus appears to have been no tendency for pretax profits to vary in a way that offsets differences in effective tax rates

time consistent public policy in this paper we study how a benevolent government that cannot commit to future policy should trade off the costs and benefits of public expenditure we characterize and solve for markov perfect equilibria of the dynamic game between successive governments the characterization consists of an inter temporal first order condition a generalized euler equation for the government and we use it both to gain insight into the nature of the equilibrium and as a basis for computations for a calibrated economy we find that when the only tax base available to the government is capital income an inelastic source of funds at any point in time the government still refrains from taxing at confiscatory rates we also find that when the only tax base is labour income the markov equilibrium features less public expenditure and lower tax rates than the ramsey equilibrium

econometric developments in agricultural and resource economics the first 100 years this article reviews the major contributions of agricultural and resource economists in the area of econometrics over the past 100 years early on a number of agricultural economists were in on the ground floor in terms of developing new econometric methods over time as the economics profession became more empirically oriented agricultural and resource economists increasingly assumed the role of early adopters of new econometric methods even so agricultural and resource economists continue to make useful modifications to econometric techniques in order to adapt the methods to the unique nature of the problems and applications that we study

supply side interventions and redistribution we evaluate the eect on welfare of shifting the burden of capi tal income taxes to labor taxes in a dynamic equilibrium model with heterogeneous agents and constant tax rates we calibrate and simu late the economy we nd that lowering capital taxes has two eects i it increases e ciency in terms of aggregate production and ii it redistributes wealth in favor of those agents with a low wage wealth ratio when the parameters of the model are calibrated to match the distribution of income in terms of the wage wealth ratio the redis tributive eect dominates and agents with a high wage wealth ratio would experience a large loss in utility if capital income taxes were eliminated

cattle cycles heterogeneous expectations and the age distribution of capital abstract this paper builds a dynamic forward looking model describing the approximate 10 year cattle cycle the theoretical model improves on existing models by 1 keeping track of the age distribution of the capital stock 2 allowing for heterogeneous expectations and 3 recognizing that cow calf operators make investment decisions on both the cow and calf margins the structural parameters are estimated with gmm techniques and used to produce impulse response functions which show that the model endogenously propagates shocks to produce 10 year cattle cycles without relying on shocks that hit every 10 years focusing solely on several major macroeconomic shocks i also show that the model is capable of matching the timing and amplitude of the u s cattle cycle

taxing capital not a bad idea after all we quantitatively characterize the optimal capital and labor income tax in an overlapping generations model with idiosyncratic uninsurable income shocks and permanent productivity difierences of households the optimal capital income tax rate is signiflcantly positive at 36 percent the optimal progressive labor income tax is roughly a at tax of 23 percent with a deduction of 7 200 relative to average household income of 42 000 the high optimal capital income tax is mainly driven by the life cycle structure of the model whereas the optimal progressivity of the labor income tax is attributable to the insurance and redistribution role of the tax system jel e62 h21 h24

an equilibrium model of the business cycle with household production and fiscal policy the authors estimate a dynamic general equilibrium model of the u s economy that includes an explicit household production sector and stochastic fiscal variables they use their estimates to investigate two issues first the authors analyze how well the model accounts for aggregate fluctuations they find that household production has a significant impact and reject a nested specification in which changes in the home production technology do not matter for market variables second the authors study the effects of some simple fiscal policy experiments and show that the model generates different predictions for the effects of tax changes than similar models without home production copyright 1997 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

impacts of declining u s retail beef demand on farm level beef prices and production a systems model was estimated to determine the effects of declining u s retail beef demand on farm level beef prices and production retail beef demand declined by nearly 66 from 1976 to 1999 results indicate autonomous shifts in retail demand significantly impacted farm level demands and production based on equilibrium multipliers the 1976 99 reduction in beef demand decreased real slaughter cattle prices and production by 32 1 and 11 2 respectively real feeder cattle prices and production decreased by 8 0 and 22 6 respectively combining the decreases in farm prices and production slaughter and feeder cattle producers experienced a real revenue reduction of 13 3 billion 61 due to the long term decline in demand

optimal taxation in models of endogenous growth we study the problem of optimal taxation in three infinite horizon representative agent endogenous growth models the first model is a convex model in which physical and human capital are perfectly symmetric our second model incorporates elastic labor supply through a lucas style technology analysis of these two models points out the danger of assuming that government expenditures are exogenous in our third model we include government expenditures as a productive input in capital formation showing that the limiting tax rate on capital is no longer zero in numerical simulations we find similar effects on growth and welfare in all three models

do free goods stick to poor households experimental evidence on insecticide treated bednets summary if the market allocates goods to those willing and able to pay the most for them efforts to target durable health goods such as insecticide treated bednets itns to poor populations may prove ineffective with the poor reselling donated goods to the non poor who value them more highly however low market demand may be due to liquidity constraints rather than low valuation of nets the endowment effect also militates against the resale of in kind transfers we quantify these two effects through a field experiment in uganda our results indicate that very few nets will be resold by recipient households

information branding certification and consumer willingness to pay for high iron pearl millet evidence from experimental auctions in maharashtra india abstract in this paper we use hedonic testing methods adopted from food science literature and the becker degroot marschak mechanism adopted from economic valuation literature to estimate consumer demand for biofortified high iron pearl millet hipm in maharashtra india unlike biofortification with provitamin a biofortification with minerals such as iron and zinc does not change the color or the appearance of the biofortified crop therefore we test the impact of both nutrition information and branding and certification as well as the nature of the brand and of the certifying authority state level versus international on consumer demand for hipm we find that even in the absence of nutrition information consumers assign a small but significant premium to the hipm variety relative to the local variety this is consistent with consumers more favorable rating of the sensory characteristics of the high iron variety nutrition information on the health benefits of hipm increases this premium substantially and regression analysis reveals that consumers prefer international branding and international certification authority to their state level counterparts

demand for beef from cattle administered growth hormones or fed genetically modified corn a comparison of consumers in france germany the united kingdom and the united states we compare consumer valuations of beef ribeye steaks from cattle produced without growth hormones or genetically modified corn in france germany the united kingdom and the united states results suggest that french consumers place a higher value on beef from cattle that have not been administered added growth hormones than u s consumers however valuations of non hormone treated beef are statistically indistinguishable across germany the united kingdom and the united states results also suggest that european consumers place a much higher value on beef from cattle that have not been fed genetically modified corn than u s consumers copyright 2003 oxford university press

a dynamic model of investment in the u s beef cattle industry reproduction constraints lead to some a priori information that may prove valuable in econo metrically modeling inventory dynamics within the u s cattle herd the distributed lag models estimated for animal inventories suggest an implicit incorporation of the age distribution of the herd that is crucial to understanding the retention culling investment decisions the estimated equations are validated using post sample observations that were withheld prior to estimation the final form dynamic equations have complex roots and protracted price and investment effects the parameter estimates are used to calculate intermediate and long run elasticities at the means of relevant variables

consumer acceptability of yellow maize products in zimbabwe abstract this study analyzes consumers awareness of and attitudes towards yellow maize products in zimbabwe and suggests intervention strategies that will ensure increased production and consumption of the crop which is rich in provitamin a to help prevent the incidence of vitamin a deficiency prevalent among vulnerable groups data from 360 randomly selected rural and urban households show that yellow maize is known to all but few are aware of its nutritional qualities or consume it the main source of supply is imported food aid rich in oils carotenoids and fructose yellow maize easily undergoes chemical changes to produce unacceptable organoleptic properties or bad taste if poorly handled during importation these two factors are responsible for it being perceived inferior to white maize by consumers quality assurance during importation can improve consumer confidence but a long term strategy will be to vigorously promote domestic production of yellow maize varieties rich in high levels of carotene that meet the preferences of consumers drawing from a probit model regression analysis nutritional education can potentially promote yellow maize consumption especially if targeted at low income households domestic production and consumption of yellow maize will decrease vitamin a deficiency among vulnerable groups and improve food insecurity through reduced grain prices and increased incomes for farmers these results draw attention to the need for policy makers in developing countries to review their agricultural policies to ensure that they do not undermine the local production and consumption of nutritionally valuable crops

optimal fiscal policy in a business cycle model this paper develops the quantitative implications of optimal fiscal policy in a business cycle model in a stationary equilibrium the ex ante tax rate on capital income is approximately zero there is an equivalence class of ex post capital income tax rates and bond policies that support a given allocation within this class the optimal ex post capital tax rates can range from close to independently and identically distributed to close to a random walk the tax rate on labor income fluctuates very little and inherits the persistence properties of the exogenous shocks thus there is no presumption that optimal labor tax rates follow a random walk most of the welfare gains realized by switching from a tax system like that of the united states to the ramsey system come from an initial period of high taxation on capital income

cattle cycles is there a role for a financial accelerator the hypotheses that endogenous credit constraints based on fluctuating asset values and cash flow prolong and accentuate us cattle cycles and that more diversified cow calf firms are less affected by this phenomenon are tested breeding cattle inventories are an interesting example to study credit constraints because they are among the most cyclical of economic time series firms have heterogeneous diversification levels and they avoid many of the problems with previous investment cash flow sensitivities studies noted by kaplan and zingales the results are consistent with earlier credit constraint studies i e breeding cattle inventories are sensitive to shifting credit constraint regimes and cow calf firms with higher diversification levels are less affected by credit constraints

are consumers in developing countries willing to pay more for micronutrient dense biofortified foods evidence from a field experiment in uganda vitamin a deficiency is a major health problem in africa and in many other developing countries biofortified staple crops that are high in pro vitamin a have the potential to reduce the prevalence of vitamin a deficiency using a choice experiment with the real product in uganda we quantify the magnitude of the premium or discount in consumers willingness to pay wtp that may be associated with it results suggest that taste plays an important role in consumer acceptance and the provision of nutrition information does translate into substantial premiums for the biofortified variety there is a substantial hypothetical bias in the wtp for the new varieties and while cheap talk mitigates this bias it does not eliminate it

time consistent optimal fiscal policy this article studies the properties of optimal fiscal policy in a stochastic growth model when the government cannot commit itself beyond the next period s capital income tax rate we find that the results contrast markedly with those under full commitment first capital income tax rates are very high 65 on average versus close to zero on average under full commitment second labor income taxes are rather low on average about 12 versus a value of around 31 under full commitment finally labor income taxes are quite volatile whereas under full commitment their standard deviation is essentially zero

redistributive taxation in a simple perfect foresight model abstract we investigate the redistributive potential of capital taxation in an intertemporal maximizing model of capital formation first even unanticipated redistributive capital taxation is severely limited in its effectiveness since it depresses wages second under any convergent redistributive tax policy which maximizes a paretian social objective the capital income tax will converge to zero independent of the factor supply elasticities these results are independent of workers holdings of capital

combining participatory crop trials and experimental auctions to estimate farmer preferences for improved common bean in rwanda abstract participatory crop improvement raises the prospects for developing seed varieties that meet the needs of subsistence farmers but may face challenges regarding preference elicitation particularly in complicated policy environments we integrate binding experimental auctions with participatory variety selection to elicit farmers preferences for improved common bean varieties in rwanda we find that auctions reveal farmer preferences more accurately than stated nonbinding rankings in this context and that participatory on farm crop research is essential to understanding how farmers evaluate tradeoffs between multiple crop attributes we also find that farmers highly value intercrop yield despite government policy that encourages farmers to monocrop

on the taxation of human and physical capital in models of endogenous growth abstract this paper studies the effects of factor income taxation and of subsidies to human capital accumulation in models of endogenous growth it examines in particular how these effects depend on the specification of the leisure activity and on the technology and tax treatment of the sector producing human capital it shows that the negative effects of factor income taxes on economic growth are stronger when the human capital sector is a market good under these circumstances a subsidy to human capital accumulation can offset the direct growth effects of labor taxation making it akin to a consumption tax the paper then briefly discusses the normative implications of the analysis for the optimal taxation of factor incomes

short run supply responses in the u s beef cattle industry this article investigates the response of beef cattle producers to changes in the price of cattle previous research has suggested that there may be a negative short run supply response to a permanent increase in the price of cattle we build a dynamic rational expectations model that separates the markets for fed and unfed beef this separation generates predictions that the supply response is generally positive even for permanent shocks in the short run and nests the negative supply response as a special case for appropriately restricted demand shocks

economics of biofortification micronutrient malnutrition affects billions of people world wide causing serious health problems different micronutrient interventions are currently being used but their overall coverage is relatively limited biofortification that is breeding staple food crops for higher micronutrient contents has been proposed as a new agriculture based approach yet as biofortified crops are still under development relatively little is known about their economic impacts and wider ramifications in this article the main factors that will influence their future success are discussed and a methodology for economic impact assessment is presented combining agricultural nutrition and health aspects ex ante studies from india and other developing countries suggest that biofortified crops can reduce the problem of micronutrient malnutrition in a cost effective way when they are targeted to specific situations projected social returns on research investments are high and competitive with productivity enhancing agricultural technologies these promising results notwithstanding biofortification should be seen as a complement rather than a substitute for existing micronutrient interventions since the magnitude and complexity of the problem necessitate a multiplicity of approaches further research is needed to corroborate these findings and to address certain issues still unresolved at this stage

does market timing contribute to the cattle cycle recent evidence suggests that cyclical cattle inventories are driven by exogenous shocks this article examines a second possible contributing factor to the cattle cycle a market timing effect that arises from individual attempts to maintain countercyclical inventories the model uncovers an important conceptual point to the extent that cycles are driven by exogenous shocks a representative producer should outperform one who maintains a constant inventory whereas for cycles induced by market timing a representative producer should underperform one with a constant inventory simulated net returns over 1974 98 reveal that a constant inventory manager significantly outperformed the representative u s producer which indicates that market timing influences the cattle cycle

welfare gains from quality certification of infant foods results from a market experiment in mali in low income countries malnutrition is often most severe among infants of six to twenty four months they need higher density foods than the family diet but density is a credence attribute we hypothesize that the premium now paid for heavily advertised brands reflects demand for quality assurance which could be provided at lower cost to competing firms through third party certification we use a new market experiment to find that mothers average willingness to pay for certification is about 1 75 kg or four times its cost so that total economic surplus gains from introducing certification to mali would be on the order of 1 million annually

estimating intertemporal supply response in the fed beef market a partial adjustment model with monthly lag structures on expected output and input prices is used to estimate intertemporal supply behavior of fed beef previous research has provided conflicting supply elasticities the present work reconciles the conflicts by integrating different lengths of run into cattle marketing and placement decisions for example the model dynamics incorporate short run changes in cattle asset values and long run adjustments in resource use empirical results provide no evidence of short run supply fixity supply elasticities switch from negative to positive over time

heterogeneity in capital and skills in a neoclassical stochastic growth model does a heterogeneous agents version of a neoclassical model with labor leisure choice replicate the distributions of consumption and working hours observed in the cross sectional data does incorporating heterogeneity enhance the aggregate performance of the representative agent model we address these questions in a complete market model economy with two sources of heterogeneity initial endowments and non acquired skills we find positive answers to both questions

information and consumer willingness to pay for biofortified yellow cassava evidence from experimental auctions in nigeria in this article we use the becker degroot marschak mechanism to estimate consumer demand for biofortified yellow cassava varieties in two states of nigeria imo in the southeast and oyo in the southwest these two states exhibit distinct habitual product color preferences for staple food made with cassava we estimate the effect of nutrition information campaigns and nature of planting material delivery institutions on consumer demand willingness to pay estimations account for the effect of product endowment censoring in bids and nonpayment in oyo consumers are willing to pay a premium for light yellow cassava variety even in the absence of nutrition information the article finds that nutrition information results in a large and significant price premium for biofortified cassava in both states and the nature of delivery institution has no significant effect

consumer benefits of labels and bans on gm foods choice experiments with swedish consumers the european union has been relatively cautious about using biotechnology in food production a label regime combined with the right of individual member states to ban introduction of new genetically modified gm strains means that gm food products in effect are banned in many countries we show how it is possible to empirically test whether a ban can be motivated by reference to potential negative externalities this is followed up by results from a choice experiment we cannot reject the hypothesis of equal wtp for a ban and a labeling scheme

homogeneity and supply supply functions in the ubiquitous gorman class are examined for their homogeneity properties homogeneity places surprisingly strong restrictions on functional forms these forms facilitate testing of aggregability given homogeneity or homogeneity given aggregability or testing both

estimating intertemporal supply response in the fed beef market comment in a recent article in this journal marsh estimated a monthly supply equation for beef slaughter fed marketings that was intended to resolve past discrepancies of the signs of own price elasticities he concluded that the discrepancy could be explained by introducing dynamics that allowed different signs for short run and long run elasticities marsh also estimated a dynamic demand equation for the feeder cattle input his study is recent well executed and representative of much agricultural supply response work it may not be a key model in the sense used by tomek and therefore a candidate for duplication though the study does engage in the spirit of tomek s improvement criterion marsh specifies a model that satisfies the traditional measures of model performance that is it exhibits a good durbinwatson statistic a good r2 and significant t statistics it accounts for the presence of lagged dependent variables and autocorrelated disturbances by implementing a nonlinear least squares algorithm burt townsend and lafrance that allows for consistent and asymptotically efficient estimates however we find his model turns out flawed when confronted with other statistical and economic

estimating consumer willingness to pay for food quality with experimental auctions the case of yellow versus fortified maize meal in kenya biofortification of maize with provitamin a carotenoids is a new approach to the alleviation of vitamin a deficiencies in africa unfortunately these varieties are yellow or orange while consumers generally prefer white consumer willingness to pay for yellow and fortified maize was compared in experimental auctions in three regions in kenya the premium that consumers are willing pay for fortified maize 24 was higher than the discount they require to buy yellow maize 11 and in one zone consumers prefer yellow yellow color is therefore not an impossible obstacle for biofortified maize although it would clearly be easier to introduce this maize first in regions where yellow maize is currently grown

an econometric model of cattle inventories dynamic regression equations are estimated for each beef cattle breeding herd and beef cattle inventories at two levels of aggregation the u s and montana the analysis for montana was utilized as a guide for specification of the national equation to reduce the inference problem associated with letting the sample data help specify the model rational lags on average price received by farmers for calves and the ratio of fed beef to corn prices at omaha constitute the primary explanatory variables the equations perform exceedingly well over the sample period 1950 80 and in post sample forecasts with the sample truncated back to 1970

valuing an eu animal welfare label using experimental auctions the aim of this article is to determine consumers valuation for an eu animal welfare eu caw label for products providing higher animal welfare standards than the current legal requirements using revealed preference data from random nth price auction mechanism and two auction procedures our results generally suggest that consumers are willing to pay a premium for an eu animal welfare eu caw label for cured ham this finding is consistent in both the endowment and full bidding auction approaches we employed in our experiments conducted in spain the average premium that consumers are willing to pay for a cured ham with the eu caw label ranges between 19 and 23 of the average price of the regular cured ham that is currently available in supermarkets

communication commitment and growth abstract we study the effect on the growth of an economy of alternative financing opportunities in a stochastic growth model with incentive constraints efficient accumulation mechanisms are designed and computed for economies that differ in their incentive structure we show that when borrowing is subject to information constraints there is a computable efficient transfer mechanism that does not affect capital accumulation and investment patterns even though consumption patterns and the distribution of wealth are affected in contrast enforcement constraints can severely reduce the outside financing opportunities and affect investment patters and economic growth we adapt numerical algorithms for obtaining numerical solutions of these models

a residence time model of housing markets abstract this paper estimates a semi markov model of housing markets in which families move from one home to another spend a random amount of time in each home and choose whether to own or to rent at each move limiting conditions of the semi markov process are used to characterize the steady state frequency of owner occupied housing and to simulate the impact of changes in housing tax policy this approach differs markedly from previous studies of housing tax policy which focus on the entire population as opposed to the movers and ignore the effect of household residence times see king 1980 rosen 1979 white and white 1977 or laidler 1969 residence times further influence the analysis by affecting the relative cost of owning to renting in the tenure choice model homeowners pay legal and realtor fees at the time they move out of their homes which renters do not have to pay the discounted value of these fees declines with length of stay and provides a structural explanation of why families with longer residence times have a greater propensity to own results from the empirical analysis suggest that the semi markov model closely predicts conditions in the united states and provide important insights into the effects of housing tax policy residence times are also found to influence household tenure choice through their impact on the discounted legal and realtor fees paid by homeowners

on the size of u s government political economy in the neoclassical growth model we study a dynamic version of meltzer and richard s median voter model of the size of government taxes are proportional to total income and they are redistributed as equal lump sum transfers voting takes place periodically over time and each consumer votes for the tax rate that maximizes his equilibrium utility we calibrate the model to u s data key elements in the calibration are the income and wealth distribution and the parameters governing the leisure and consumption choices the total size of transfers predicted by our political economy model is quite close to the size of transfers in the data

on the efficiency and equity trade off abstract the concept of policy measures that create a potential pareto improvement has dominated normative economics the use of this concept in welfare economics relies on the availability of discriminatory lump sum transfers in such a way that the implementation of the efficient policy measure leads to a pareto movement in the economy however most studies of efficient policies preclude by assumption the existence of lump sum taxation this paper proposes in economies amenable to gorman aggregation one simple methodology to rank alternative allocations in terms of their distributional implications in a world with no lump sum transfers this methodology is simple because it is independent of the distribution of characteristics in the economy then for a specific policy measure it can be easily identified whether it implies an equity efficiency trade off the method is illustrated by analyzing the effects on inequality of the elimination of capital taxation the reduction of the inflation tax and the liberalization of capital movements in a small open economy

on information and market dynamics the case of the u s beef market abstract the paper investigates the nature of dynamic prices and expectations in a competitive market the approach is applied to the u s beef market which exhibits cyclical patterns and significant biological lags in the production process beef price equations are estimated under different expectation regimes the empirical results indicate the presence of heterogeneous price expectations with a significant number of market participants neglecting information about the existence of a beef cycle

international comparisons of cattle cycles the time series properties of cattle production in three countries with different technologies argentina the united states and uruguay are studied in order to shed light on the role of technology in the dynamics of the cattle sector four series are analyzed for each country slaughter price stock of cows and total herd spectral decomposition of the time series shows the existence of cycles having surprising regularity for all the four time series the three countries exhibit very similar cyclicities in spite of their different technologies and economic environment

credit constraints farm characteristics and the farm economy differential impacts on feeder cattle and beef cow inventories a recurrent topic in the macroeconomic literature is the financial accelerator the notion that informational asymmetries introduce inefficiencies to financial markets which amplify and propagate the effects of real or monetary shocks with the purpose of finding empirical evidence that is consistent with a financial accelerator operating in the cattle sector inventory investment models are estimated with an appended cash flow variable the inclusion of cash flow is motivated by the notion that investment by credit constrained farms should be sensitive to movements in internal funds results are consistent with the financial accelerator operating in the feeder cattle but not in the cow calf sector

optimal taxation of capital income in general equilibrium with infinite lives this paper analyzes the optimal tax on capital income in general equilibrium models of the second best agents have infinite lives and utility functions which are extensions from the koopmans form the population is heterogeneous the important property of the models is the equality between the social and the private discount rates in the long run i find that the optimal tax rate is zero in the long run for a special case of additively separable utility functions i then determine the tax rates along the dynamic path and conditions that are sufficient for the local stability of the steady state

the welfare cost of factor taxation in a perfect foresight model this paper examines the marginal efficiency cost of various factor taxes in a dynamic general equilibrium model the au thor solves for the excess burden of anticipated and unanticipated t emporary and permanent tax policies using a range of estimates for taste and technology parameters he finds excess burdens larger than those indicated by previous studies that use static models these exc ess burdens are sensitive to parameter values and timing however th e rankings of alternative tax policies turn out to be insensitive to structural parameter values copyright 1987 by university of chicago press

using a discrete choice experiment to elicit the demand for a nutritious food willingness to pay for orange maize in rural zambia using a discrete choice experiment this paper estimates the willingness to pay for biofortified orange maize in rural zambia the study design has five treatment arms which enable an analysis of the impact of nutrition information comparing the use of simulated radio versus community leaders in transmitting the nutrition message on willingness to pay and to account for possible novelty effects in the magnitude of premiums or discounts the estimation strategy also takes into account lexicographic preferences of a subset of our respondents the results suggest that a orange maize is not confused with yellow maize and has the potential to compete with white maize in the absence of a nutrition campaign b there is a premium for orange maize with nutrition information and c different modes of nutritional message dissemination have the same impact on consumer acceptance

optimal fiscal policy in a stochastic growth model although most neoclassical growth models focus on competitive equilibria which are pareto optimal and ignore the role of government recent works by romer 28 29 judd 20 baxter and king s and bizer and judd 7 have shown that government can be introduced into and suboptimal equilibria can be studied in these models as well their studies however are positive analyses of the effects of fiscal policy in competitive equilibria the purpose of this paper is to apply ramsey s 27 theory of optimal taxation to the normative study of fiscal policy in a stocastic growth model ramsey studied a static representative consumer economy with many goods in his formulation a government consumes a fixed amount of these goods which it purchases at market prices and finances by levying flat rate excise taxes prices and quantities are determined in a competitive equilibrium the government is benevolent and its objective is to choose the optimal tax rates to maximize the representative consumer s utility a number of economists among them kydland and prescott 23 barro 3 turnovsky and brock 31 and lucas and stockey 26 have noted that ramsey s formulation can be applied to dynamic economies with uncertainty if one reinterprets the goods in static problems as dated state contingent goods in this framework a fiscal policy is a rule which specifies state contingent tax rates and the amount of public debt issue in each date the optimal fiscal policy is defined as the one which leads to a quantity