PATTERNS OF TRADE AND GROWTH UNDER INCREASING RETURNS: ESCAPE FROM THE POVERTY TRAP*

We consider a two-sector model of intertemporal resource allocation in which the investment good sector exhibits an initial phase of increasing returns in production. The economy maximizes a discounted sum of one period utilities derived from the consumption good. If it is autarkic, it may face a poverty trap from which it cannot escape even if it follows an optimal policy. If it engages in trade with the outside world as a price taker, it may escape from the trap. The optimal patterns of production and trade are analysed for such an economy.     

Low level equilibrium trap,unemployment, efficiency of education system,child labour and human capital formation

This paper builds an overlapping generations household economy model to examine the impact of adult unemployment on the human capital formation of a child and on child labour, as viewed through the lens of the adult’s expectations of future employability. The model indicates that the higher the adult unemployment rate in the skilled sector, the lesser is the time allocated by an unskilled adult towards schooling of her child. We also find that an increase in the unskilled adult’s wage may or may not decrease child labour in the presence of unemployment. The model predicts that an increase in child wage increases schooling and human capital growth rate only if the adults in the unskilled sector earn less than subsistence consumption expenditure. As the responsiveness of skilled wage to human capital increases, schooling and human capital growth rates increase. The model dynamics bring out the importance of education efficiency and parental human capital in human capital formation of the child. In the case of an inefficient education system, generations will be trapped into low level equilibrium. Only in the presence of an efficient education system, steady growth of human capital is possible. Suitable policies that may be framed to escape the child labour trap are discussed as well.     

Education, corruption, and the distribution of income

We examine how the interaction between education and corruption affects institutional reform and economic development. While corruption reduces average income and education, education increases not only output and hence potential corruption rents, but also produces more informed electorates that better monitor government actions. We find that economies with intermediate levels of education remain in a poverty trap since the level of skills creates sufficient corruption rents but not enough monitoring. Economies with low or high levels of education can escape the poverty trap, and inequality plays a key role in determining whether this occurs through a change in institutions or an expansion of education.     

With exhaustible resources, can a developing country escape from the poverty trap?

This paper studies the optimal growth of a developing non-renewable natural resource producer. It extracts the resource, and produces a single consumption good with man-made capital. Moreover, it can sell the extracted resource abroad and use the revenues to buy an imported good, perfect substitute of the domestic consumption good. The domestic technology is convex-concave, so that the economy may be locked into a poverty trap. We show that the extent to which the country will escape from the poverty trap depends on the interactions between its technology and its impatience, the characteristics of the resource revenue function, the level of its initial capital stock, and the abundance of the natural resource.     

二元财政的制度变迁：基于路径依赖的视角

植根于二元经济结构的二元财政制度总是执行有利于城镇部门发展，而且有损于农业部门发展的财政税收政策。这不仅造成了农村居民的长期贫困，而且还持续拉大城乡差距。基于新制度经济学的制度变迁分析结果显示，二元财政的制度安排内含自我增强机制，其变迁具有明显的路径依赖特征，所以，农村居民的贫困必然具有长期性，城乡差距也会持续拉大。因此，必须根据中国经济现实，对二元财政制度采取边际调整的改革措施和借助市场化的手段改善其赖以存在的经济环境，方可在长期内从整体上推动二元财政制度变迁，实现城乡平等的财政制度。     

Environmental Quality,Public Debt and Economic Development

This article analyzes the consequences on capital accumulation and environmental quality of environmental policies financed by public debt. A public sector of pollution abatement is financed by a tax or by public debt. We show that if the initial capital stock is high enough, the economy monotonically converges to a long-run steady state. On the contrary, when the initial capital stock is low, the economy is relegated to an environmental poverty trap. We also explore the implications of public policies on the trap and on the long-run stable steady state. In particular, we find that government should decrease debt and increase pollution abatement to promote capital accumulation and environmental quality at the stable long-run steady state. Finally, a welfare analysis shows that there exists a level of public debt that allows a long run steady state to be optimal.     

Growth Effects of Free Trade under Increasing Returns

This paper addresses the long-term sustainability of the growth effects from trade, within the context of a dynamic optimization model where the investment sector exhibits an initial phase of increasing returns. It is proved that the qualitative properties of trade and growth remain valid, even for decreasing, rather than constant, returns to scale in the consumption sector. That is, trade enables an economy to escape a "poverty trap" and enjoy unbounded growth. Moreover, the asymptotic long-run growth rate of the optimal consumption levels with trade is determined, establishing that trade has a beneficial effect on long-run growth.
JEL Classification Numbers: O41, F12.     

Informality and Long‐Run Growth

One of the most salient features of developing economies is the existence of a large informal sector. In this paper, we use quantitative theory to study the dynamic implications of informality on wage inequality, human capital accumulation, child labor, and long‐run growth. Our model can generate transitory informality equilibria or informality‐induced poverty traps. Its calibration reveals that the case for the poverty‐trap hypothesis arises: although informality serves to protect low‐skilled workers from extreme poverty in the short run, it prevents income convergence between developed and developing nations in the long run. Then we examine the effectiveness of different development policies to exit the poverty trap. Our numerical experiments show that using means‐tested education subsidies is the most cost‐effective single policy option. However, for longer time horizons, or as the economy gets closer to the poverty trap threshold, combining means‐tested education and wage subsidies is even more effective.     

Foreign capital,return to education and child labour

The paper attempts to identify the different channels through which economic reforms can affect the incidence of child labour in a developing economy using a three-sector general equilibrium framework with child labour. We show that reduction in poverty is not a necessary condition for the problem of child labour to improve in the developing economies. Economic reforms like an inflow of foreign capital can mitigate the incidence of child labour by raising the return to education and lowering the earning opportunities of children.     

Dependency traps in self‐targeting food aid programs

We present an economy of farmers where food aid is warranted due to poverty traps triggered by nonconvex production sets. We model a food‐aid intervention as a dynamic game between a food‐aid manager and the farmers in a context of asymmetrical information. The food‐aid manager is motivated by a relief objective and targets farmers suffering the poverty trap. The food‐aid manager uses a self‐targeting mechanism by providing the aid through a food wage in exchange for participation in the intervention's activities. Guided by the relief objective and targeting constraint, he fixes the food wage equal to the reservation wage of the farmers not suffering the poverty trap. Dependency traps will then happen every time there is a considerable technological and nutritional gap between farmers who are in and out of the poverty trap. When there is a gap, poor farmers earn more working for the reservation wage of the well‐off farmers than by working in their own farm. Dependency can be overcome only if the food‐aid program allows farmers to upgrade their productive technologies and catch up with those farmers who are out of the poverty trap.     

The effects of location and sectoral components of economic growth on poverty: Evidence from Indonesia

In this paper, we investigate the relationship between economic growth and poverty reduction by differentiating growth and poverty into their sectoral composition and urban–rural location using data from Indonesia. We find that rural services growth reduces poverty in all sectors and locations. However, urban services growth has the largest effect on poverty in most sectors. Finally, we also find that rural agriculture growth strongly reduces poverty in rural areas, the largest contributor to poverty in Indonesia. This implies that while agriculture growth in rural areas still plays a major role in reducing poverty, policies that enable strong growth in the services sector in both urban and rural areas would expedite poverty reduction.     

我国农户贫困动态演变影响因素分析——基于CHNS家庭微观数据的研究

动态贫困研究是从中长期考察家庭贫困状态,关注家庭贫困状态的脆弱性与发展演变。采用CHNS家庭微观数据,通过对我国农户动态贫困的研究发现:男性户主、年轻户主、人口规模较大、低人力资本、人均使用耕地面积越多的家庭,在一段时间内多次贫困发生概率较大;此外,我国农户动态贫困还表现出较强的区位特性。减贫政策应该从以下四方面改进:一是细分农村贫困人口类型,实施有针对性的扶贫政策;二是建立贫困家庭教育技能补贴制度;三是帮扶贫困地区开展非农或高附加值农业经济;四是建立有区域特征的扶贫开发机制。     

A credit market in early stages of economic development

Even if the relatively rich and the poor are initially caught in a poverty trap, the relatively rich can escape poverty by receiving payments from the poor. Further accumulation of wealth by the rich allows the poor to escape poverty.     

Public policy and rural poverty : A system dynamics analysis of a social change effort in Pakistan

This paper attempts to explain why public policies that were expected to alleviate rural poverty in Pakistan have not worked. The analysis is based on a system dynamics model that incorporates the income distribution processes of a typical developing country agrarian economy consisting of a capitalist and self-employed sector. Only the economic factors arising out of the rational decisions of the two sectors regarding production and disbursement of income have been taken into account. These factors are considered adequate for explaining the persistence of rural poverty, although the role of social and political factors is acknowledged.The study suggests that the absence of an economic force that should encourage land ownership by its cultivators is a key factor responsible for the poor economic condition of the working rural household that form the majority of the rural population. Land is easily separated from cultivators and is concentrated among the few capitalist households. This concentration significantly reduces income in self-employment and thus leaves the cultivators with very little bargaining power for negotiating compensation for thier labor. Thus development policies striving to increase productivity may only serve to increase the claim to income of the few capitalist households, leaving incomes of the majority of the households unchanged while also assuring continuation of low worker compensation.The study indicates that a development policy for alleviating poverty should simultaneously incorporate fiscal instruments to encourage transfer of land ownership to its cultivators and measures that help increase the productivity of land.     

Livelihoods and farm efficiency in rural Georgia

This study contributes to the literature on the role of livelihood strategies in rural growth and poverty reduction. It distinguishes between livelihood diversity strategies that contribute to sustainable growth in household incomes, and those that mainly have a ‘coping’ function. It suggests that typically, the contribution of livelihood diversity to growing household income is through relaxing dependence on credit for access to capital. In this scenario, livelihood diversity would lead to higher technical efficiency in agriculture via investment and thereby to higher household incomes. Survey data from Georgia are introduced and used to test these hypotheses using a Bayesian stochastic frontier approach. The findings are relevant to defining more clearly the scope and aims of policies to stimulate the rural non-farm economy in developing and transition countries.     

Monetary and fiscal policies' effect on agricultural growth: GMM estimation and simulation analysis

The concept of sustainable economic growth is closely linked with the agricultural growth. This is especially true in the context of under-developed countries. Pakistan is a typical under-developed country that has huge labor force employed in conventional rural economy and more than half of the population relies on agriculture for subsistence. The study examines the agricultural growth through developing a model using the data from agricultural sector of Pakistan for the period 1972–2010. The model is primarily based on input–output reduced form structural equations approach. It is then estimated by GMM, validated and used for deterministic simulation analyses. Finally the validated model is used to critically analyze the impact of fiscal, monetary and energy policies on the agricultural output. We conluded that recent fiscal and monetary policies should be continued, while the energy policy needs to be modified in order to improve the agricultural GDP and reduce the rural poverty situation in the country.     

A general equilibrium analysis of production subsidy in a Harris-Todaro developing economy: an application to India

Since 1950s India has advocated import substituting industrialization policies to promote its manufacturing sector. The end result was creation of a dual economy: highly favored manufacturing sector with high and rigid wages and neglected agricultural sector with low wages and poverty. Because of the higher wages in the manufacturing sector, the rural laborers migrate to the urban sector, a typical characteristic of the Harris-Todaro developing economy. Realizing this crisis, the Indian government recently initiated policies to boost agricultural production to curb the labor migration and improve the welfare of the rural population. In this study, we develop a computable general equilibrium (CGE) model for India by incorporating Harris-Todaro economic characteristics of unemployment, labor migration, farm dependant population, and labor-intensive agriculture. We use the model to analyze the effects of agricultural production subsidy policies on employment, factor price, output price, output levels, and welfare in agricultural and manufacturing sectors. Our findings show that agricultural production subsidy increases agricultural production, reduces unemployment, raises the wage rate in the agriculture sector, augments the consumption among the rural and urban households, and increases the rental rate for capital in agricultural sector.     

旅游减贫具有空间溢出效应吗?

针对现有文献缺乏旅游减贫多维效果及空间效应研究,本文基于多维贫困视角,运用2008—2017年中国30个省份的面板数据,构建了包含经济、教育、医疗、生活与环境五个维度的贫困减缓评价指标体系,并在地理距离矩阵和经济距离矩阵共同构成的综合嵌套矩阵的基础上,分别运用空间自相关检验、空间杜宾模型探究了各维度贫困减缓的空间分布特征及旅游发展对各维度贫困减缓的空间效应。主要结论有:(1)十年间,中国乡村旅游业发展水平呈现显著空间正向相关性,纳入空间效应的空间杜宾模型较好地揭示出区域间乡村旅游发展存在显著的空间溢出效应。(2)十年间,各维度的减贫效果亦呈现显著空间正向相关性,表明各维度减贫效果存在着空间集聚特征。(3)十年间,旅游发展对经济、生活、环境等维度的贫困均具有显著减缓作用,更重要的发现是旅游发展在这三个减贫维度上具有正向空间溢出效应。旅游发展对教育、医疗两个维度上贫困减缓的直接和间接效应均未通过显著性检验。(4)从空间异质性视角分析,旅游发展对经济减贫维度的空间溢出效应呈现出东部区域→中部区域→西部区域逐步递减规律;旅游发展对生活减贫维度和环境减贫维度的空间溢出效应均呈现出由东部区域→中部区域→西部区域逐渐增大特征。最后,论文就旅游减贫提出了相关政策建议。     

中国农村民间信用缓解贫困的有效性分析

中国农村贫困面广,资金外流使农村反贫困形势更加严峻。农村民间信用内生于农村经济的发展需要,是农村经济主体的主要融资渠道,对农村经济发展和缓解农村贫困具有积极作用。文章通过静态灰关联和前移动态关联矩阵的比较分析,对上述现象进行实证研究,结果表明,民间信用可以有效缓解中国农户的贫困状况。文章认为,通过完善和规范民间融资市场,民间信用在发挥对中国农村缓解贫困的作用、促进农村经济结构的合理优化等方面是可以有所作为的。     

Fiscal policy,growth, income distribution and sociopolitical instability

This paper identifies the fiscal instruments that governments can use to promote economic growth when sociopolitical instability (SPI) is present. We show that fiscal policy that takes into account income distribution and SPI transforms a neoclassical growth model into one with both endogenous growth and a poverty trap. Under these circumstances, the growth rate of the economy depends upon SPI, fiscal policy and income distribution. The baseline level of SPI determines an economy's ability to grow. If SPI is high, the economy remains in a poverty trap even if fiscal policy instruments are set appropriately.