Subsistence Agriculture in Transition Economies: its Roles and Determinants

In line with recent suggestions about the potential positive effects of subsistence agriculture in fragile economies, this paper discusses and explains the effects of subsistence agriculture with emphasis on transition countries. Some micro-economic models of subsistence agriculture are reviewed and a two-stage decision model, combining risk aversion and transaction costs explanations for subsistence is put forward. The role of subsistence agriculture is addressed in terms of a static comparison to a commercial only agriculture. It is shown that, under some conditions, subsistence can play a stabilising role and have positive impacts on total agriculture. Employing the concept of a subsistence level of consumption, the paper demonstrates that these static effects can be valid in a dynamic perspective, provided additional conditions are met. Policy recommendations and a future research agenda with regard to possible agricultural commercialisation are drawn from the analysis.

Banking Permits: Economic Efficiency and Distributional Effects

Most analyses of the Kyoto flexibility mechanisms focus on the cost effectiveness of “where” flexibility (e.g. by showing that mitigation costs are lower in a global permit market than in regional markets or in permit markets confined to Annex 1 countries). Less attention has been devoted to “when” flexibility, i.e. to the benefits of allowing emission permit traders to bank their permits for future use. In the model presented in this paper, banking of carbon allowances in a global permit market is fully endogenised, i.e. agents may decide to bank permits by taking into account their present and future needs and the present and future decisions of all the other agents. It is therefore possible to identify under what conditions traders find it optimal to bank permits, when banking is socially optimal, and what are the implications for present and future permit prices. We can also explain why the equilibrium rate of growth of permit prices is likely to be larger than the equilibrium interest rate. Most importantly, this paper analyses the efficiency and distributional consequences of allowing markets to optimally allocate emission permits across regions and over time. The welfare and distributional effects of an optimal intertemporal emission trading scheme are assessed for different initial allocation rules. Finally, the impact of banking on carbon emissions, technological progress, and optimal investment decisions is quantified and the incentives that banking provides to accelerate technological innovation and diffusion are also discussed. Among the many results, we show that not only does banking reduce abatement costs, but it also increases the amount of GHG emissions abated in the short-term. It should therefore belong to all emission trading schemes under construction.emission trading, banking

A Simple Theory of Predation

We propose a simple theory of predatory pricing, based on scale economies and sequential buyers (or markets). The entrant (or prey) needs to reach a critical scale to be successful. The incumbent (or predator) is ready to make losses on earlier buyers so as to deprive the prey of the scale it needs, thus making monopoly profits on later buyers. Several extensions are considered, including markets where scale economies exist because of demand externalities or two-sided market effects, and where markets are characterised by common costs. Conditions under which predation may take place in actual cases are also discussed.Anticompetitive Behaviour, Exclusion, Below-Cost Pricing, Antitrust

Environmental tax differentiation between industries and households - implications for efficiency and employment: a multi-sector intertemporal CGE analysis for Germany

This paper investigates the economic impacts of environmental tax reforms designed to reach given emission reduction targets for the German economy. Our focus is on the efficiency and employment implications of alternative schemes for emission tax differentiation between the production sector and the household sector. We point out that strong tax discrimination in favor of the production sector may cause substantial excess costs. Differences in the emission tax base and the respective ease of emission mitigation across the production sector and the household sector are shown to play a crucial role for explaining our results. --environmental taxes,taxing production vs. taxing consumption,environmental tax reforms,computable general equilibrium

MACROECONOMIC SHOCKS, HUMAN CAPITAL AND PRODUCTIVE EFFICIENCY: EVIDENCE FROM WEST AFRICAN FARMERS

Little empirical work has quantified the transitory effects of macroeconomic shocks on farm-level production behavior. We develop a simple analytical model to explain how macroeconomic shocks might temporarily divert managerial attention, thereby affecting farm-level productivity, but perhaps to different degrees and for different durations across production units. We then successfully test hypotheses from that model using panel data bracketing massive currency devaluation in the west African nation of Cote d'Ivoire. We find a transitory increase in mean plot-level technical inefficiency among Ivorien rice producers and considerable variation in the magnitude and persistence of this effect, attributable largely to ex ante complexity of operations, and the educational attainment and off-farm employment status of the plot manager.Labor and Human Capital, O1, Q12, Q18,

Twin Deficits: Squaring Theory, Evidence and Common Sense

In this paper we reconsider the twin deficit hypothesis (that fiscal shocks generating budget deficits also worsen external trade) both from a theoretical point of view and by analyzing data for Australia, Canada, the UK and the US. First, we assess the joint dynamics of budget and trade deficits along the business cycle, uncovering a strikingly recurrent S-shaped relation between the two. The correlation is actually negative, suggesting twin divergence. This observation however cannot rule out the possibility that government spending expansions and/or tax cuts may cause trade deficits, as the overall correlation is likely to be dominated by cyclical factors. Second, we reconsider the transmission of government spending in a standard two-country two-good model: we find that openness and the persistence of fiscal shocks are major determinants of the magnitude (or even sign) of the response of the trade balance to fiscal shocks. For a given persistence of the fiscal shock, the closer an economy, the larger the crowding out effect on investment, the lower the deterioration of the trade balance. Third, we take this insight to the data, investigating the transmission of fiscal shocks in a VAR framework in the four countries in our sample. Our empirical findings tend to support our view. In the US and Australia, which are relatively less open than Canada and the UK, and where government spending shocks are less persistent, we find that the external impact of fiscal policy is rather limited. Instead, private investment responds substantially. The reverse is true for Canada and the UK. These findings confirm and put into perspective earlier results, whereas fiscal expansions in the US are found to have on average a negligible effect on the country's trade balance. However, we emphasize that these results are consistent with a call for a US fiscal retrenchment to address global imbalances: the impact of budget cuts on the US external trade is muted by their positive effect on domestic investment, strengthening the US ability to generate resources against future interest and debt repayment.twin deficits, budget deficit, trade deficits, home-bias, openness, crowding out, international transmission of fiscal policy, current account adjustment, business cycle dynamics.

Ramsey model of barriers to growth and skill-biased income distribution in South Africa

The paper integrates two mechanisms of economic growth, barriers to international spillovers and skill-biased effects on the income distribution. South Africa is an interesting case study because of dramatic changes in international barriers over time and policy focus to productivity and distribution. Barriers affect the balance between innovation and adoption in the productivity growth and thereby the skill-bias. The productivity dynamics and the distributional implications are investigated in an intertemporal Ramsey growth model. The model offers a calibrated tariff-equivalence measure of the sanction effect and allows for counterfactual analysis of no-sanctions. Increased openness is shown to reduce barriers to technology adoption leading to skill-biased economic growth and worsened income distribution. The result is consistent with the observation that economic growth under sanctions has been slow and with an increase in the relative wage of unskilled labor. The tradeoff between barriers and skill-bias, foreign spillover driven productivity growth and income distribution, obviously is a challenge for growth policy.

Renewable Energy Subsidies: Second-Best Policy or Fatal Aberration for Mitigation?

This paper evaluates the consequences of renewable energy policies on welfare, resource rents and energy costs in a world where carbon pricing is imperfect and the regulator seeks to limit emissions to a (cumulative) target. We use a global general equilibrium model with an intertemporal fossil resource sector. We calculate the optimal second-best renewable energy subsidy and compare the resulting welfare level with an efficient first-best carbon pricing policy. If carbon pricing is permanently missing, mitigation costs increase by a multiple (compared to the optimal carbon pricing policy) for a wide range of parameters describing extraction costs, renewable energy costs, substitution possibilities and normative attitudes. Furthermore, we show that small deviations from the second-best subsidy can lead to strong increases in emissions and consumption losses. This confirms the rising concerns about the occurrence of unintended side effects of climate policy { a new version of the green paradox. We extend our second-best analysis by considering two further types of policy instruments: (1) temporary subsidies that are displaced by carbon pricing in the long run and (2) revenue-neutral instruments like a carbon trust and a feed-in-tariff scheme. Although these instruments cause small welfare losses, they have the potential to ease distributional conflicts as they lead to lower energy prices and higher fossil resource rents than the optimal carbon pricing policy.Feed-in-Tariff, Carbon Trust, Carbon Pricing, Supply-Side Dynamics, Green Paradox, Climate Policy

Towards a Better Understanding of Disparities in Scenarios of Decarbonization: Sectorally Explicit Results from the RECIPE Project

This paper presents results from a model intercomparison exercise among regionalized global energy-economy models conducted in the context of the RECIPE project. The economic adjustment effects of long-term climate policy aiming at stabilization of atmospheric CO2 concentrations at 450 ppm are investigated based on the cross-comparison of the intertemporal optimization models REMIND-R and WITCH as well as the recursive dynamic computable general equilibrium model IMACLIM-R. The models applied in the project differ in several respects and the comparison exercise tracks differences in the business as usual forecasts as well as in the mitigation scenarios to conceptual differences in the model structures and assumptions. In particular, the models have different representation of the sectoral structure of the energy system. A detailed sectoral analysis conducted as part of this study reveals that the sectoral representation is a crucial determinant of the mitigation strategy and costs. While all models project that the electricity sector can be decarbonized readily, emissions abatement in the non-electric sectors, particularly transport, is much more challenging. Mitigation costs and carbon prices were found to depend strongly on the availability of low-carbon options in the non-electric sectors.Decarbonization, Energy and Climate Policy

Games judges don't play: predatory pricing and strategic reasoning in US antitrust

The paper analyzes the last three decades of debates on predatory pricing in US antitrust law, starting from the literature which followed Areeda & Turner 1975 and ending with the early years of the new century, after the Brooke decision. Special emphasis is given to the game-theoretic approach to predation and to the reasons why this approach has never gained attention in courtrooms. It is argued that, despite their mathematical rigor, the sophisticated stories told by strategic models in order to demonstrate the actual viability of predatory behavior fail to satisfy the criteria which guide the decisions of antitrust courts, in particular their preference for easy-to-apply rules. Therefore predation cases are still governed by a peculiar alliance between Chicago-style price theory – which, contrary to game theory, considers predatory behavior almost always irrational – and a Harvard-style attention for the operational side of antitrust enforcement.Antitrust law; predatory pricing; Chicago School; Harvard; game theory