📚 Poverty: Concepts, Measurement, Causes and Policies | 贫困：概念、测量、原因与政策
In IGCSE Economics, poverty is not just about a lack of money. It is a multidimensional issue that affects living standards, health, education and future opportunities. Understanding the different types of poverty, how they are measured, their root causes and the policies used to tackle them is essential for evaluating economic development and government intervention.
在IGCSE经济学中，贫困不仅仅意味着缺钱。它是一个多维问题，影响生活水平、健康、教育和未来机会。理解不同类型贫困的定义、测量方法、根本原因以及应对政策，对于评估经济发展和政府干预措施至关重要。
1. Defining Absolute and Relative Poverty | 绝对贫困与相对贫困的定义
Absolute poverty refers to a condition where a person lacks the minimum income needed to meet basic physical needs such as food, clean water, shelter and clothing. The World Bank often uses an international poverty line of $2.15 a day (2022 PPP) to define extreme absolute poverty. Anyone living below this threshold is considered unable to afford the most basic necessities for survival.
绝对贫困是指一个人缺乏满足基本物质需求（如食物、洁净水、住所和衣物）所需的最低收入。世界银行通常使用每天2.15美元的国际贫困线（按2022年购买力平价计算）来定义极端绝对贫困。任何低于这一门槛的人被认为无法负担最基本的生存必需品。
Relative poverty, on the other hand, is defined in relation to the overall distribution of income in a society. A person is in relative poverty if their income falls significantly below the median household income, typically set at 50% or 60% of the median. This type of poverty can exist even in wealthy countries where people have more than enough for physical survival but still cannot afford the standard of living considered normal in that society.
相对贫困则是相对于社会整体收入分配状况来定义的。如果一个人的收入大幅低于家庭收入中位数（通常设定为中位数的50%或60%），则该人处于相对贫困状态。这种贫困即使在富裕国家也存在，人们虽能满足物质生存需求，却无法负担该社会被视为正常的生活水平。
2. Measuring Poverty: Poverty Lines and Indicators | 测量贫困：贫困线与指标
The most common way to measure absolute poverty is through a national or international poverty line. A national poverty line is calculated as the cost of a basket of goods and services considered necessary for basic survival, adjusted for regional price differences. Governments compare household income or consumption with this line to estimate the headcount ratio – the percentage of the population living in poverty.
测量绝对贫困最常用的方法是通过国家或国际贫困线。国家贫困线根据一篮子被视为基本生存所需的商品和服务的成本计算，并按地区价格差异进行调整。政府将家庭收入或消费与这条线比较，估算出贫困人口比率——即生活在贫困线以下的人口百分比。
The poverty gap index is another important measure that not only counts the number of poor people but also shows how far below the poverty line their incomes fall. It captures the depth of poverty, helping policymakers estimate the total amount of income needed to lift everyone out of poverty through perfect targeting.
贫困缺口指数是另一个重要指标，它不仅计算贫困人口数量，还显示他们的收入低于贫困线的程度。这一指标捕捉了贫困的深度，帮助政策制定者估计通过完美瞄准将所有人拉出贫困所需的总收入金额。
3. Multidimensional Poverty Index (MPI) | 多维贫困指数
Income-based measures do not capture all aspects of deprivation. The Multidimensional Poverty Index (MPI), developed by the Oxford Poverty and Human Development Initiative, looks beyond income to examine non-monetary deprivations. It assesses poverty through three main dimensions: health, education and standard of living, using ten indicators such as child mortality, nutrition, years of schooling and access to electricity.
基于收入的指标无法捕捉贫困的所有方面。由牛津贫困与人类发展倡议编制的多维贫困指数（MPI）超越了收入，考察非货币性的剥夺。它通过三个主要维度评估贫困：健康、教育和生活水平，并使用十项指标，如儿童死亡率、营养状况、受教育年限和电力获取。
A person is identified as multidimensionally poor if they are deprived in at least one-third of the weighted indicators. The MPI provides a richer picture of poverty and helps governments design targeted interventions. For IGCSE Economics, understanding that poverty is more than low income is a key analytical skill.
如果一个人至少在三分之一的加权指标上被剥夺，就会被认定为多维贫困。MPI提供了更丰富的贫困图景，并帮助政府设计有针对性的干预措施。对于IGCSE经济学，理解贫困不仅仅是低收入是一项关键分析技能。
4. Causes of Poverty: Low Income and Unemployment | 贫困的原因：低收入与失业
A primary cause of poverty is low earned income, often linked to high levels of unemployment or underemployment. When the economy cannot generate enough jobs, people lack regular wages to sustain their families. In developing countries, a large informal sector means many workers earn irregular and very low incomes with no job security or benefits, trapping them in poverty.
贫困的一个主要原因是劳动收入低，这往往与高失业率或就业不足有关。当经济无法创造足够就业岗位时，人们缺乏维持家庭生计的稳定工资。在发展中国家，庞大的非正规部门意味着许多工人收入不稳定且极低，没有职业保障或福利，使他们陷入贫困。
Cyclical unemployment during economic recessions can push previously well-off households into poverty. Moreover, low productivity in agriculture or small-scale services keeps wages depressed. Even among those employed, the 'working poor' phenomenon shows that having a job is not always sufficient to escape poverty if wages are too low.
经济衰退期间的周期性失业会将原本富裕的家庭推入贫困。此外，农业或小型服务业低下的生产率压制了工资水平。即使在就业人群中，“工作穷人”现象表明，如果工资太低，有工作并不总是足以摆脱贫困。
5. Causes of Poverty: Lack of Human Capital and Poor Health | 贫困的原因：人力资本缺乏与健康不良
Low levels of education and skills severely limit a person's ability to secure well-paid employment, creating a link between poor human capital and poverty. In many low-income communities, children are unable to attend school because families need them to work or cannot afford school fees, perpetuating an intergenerational cycle of low earning capacity.
教育水平和技能低下严重限制了一个人获得高薪工作的能力，形成了人力资本薄弱与贫困之间的联系。在许多低收入社区，儿童无法上学，因为家庭需要他们工作或无力承担学费，低收入的代际循环因此延续。
Poor health and malnutrition further entrench poverty. Ill health reduces productivity and increases medical expenses, pushing households deeper into poverty. Similarly, children suffering from malnutrition often experience cognitive and physical development delays, which reduce their future productivity and earnings. This link between health and poverty is a major concern in development economics.
健康不良和营养不良进一步加深贫困。疾病降低生产率并增加医疗支出，将家庭推向更深的贫困。同样，营养不良的儿童往往出现认知与身体发育迟缓，削弱未来的生产率和收入。健康与贫困之间的这种联系是发展经济学中的重要关切。
6. The Poverty Trap and Vicious Cycles | 贫困陷阱与恶性循环
A poverty trap is a self-reinforcing mechanism that makes it very difficult for individuals or whole nations to escape poverty. Low income leads to low savings, which means there is little capital for investment in education, health or productive assets. Without investment, productivity remains low, keeping incomes low and completing the vicious cycle.
贫困陷阱是一种自我强化的机制，使个人或整个国家极难摆脱贫困。低收入导致低储蓄，这意味着几乎没有资金投资于教育、健康或生产性资产。没有投资，生产率就保持低位，收入也就维持低水平，形成恶性循环。
At the macroeconomic level, a country in a poverty trap may lack the tax revenue needed to fund public services and infrastructure, which discourages private investment. This cycle is often illustrated by the 'big push' theory in development economics, suggesting that a coordinated, substantial injection of aid and investment is needed to break the cycle.
在宏观经济层面，陷入贫困陷阱的国家可能缺乏必要的税收收入来资助公共服务和基础设施，这又抑制了私人投资。发展经济学中的“大推进”理论常被用来解释这一循环，认为需要协调一致的、大规模援助和投资注入才能打破这一循环。
7. Income Inequality and Poverty | 收入不平等与贫困
Income inequality refers to the unequal distribution of income within an economy. While inequality is distinct from poverty, high levels of inequality can make it harder to reduce poverty. When economic growth primarily benefits the rich, the poor may see very little improvement in their living standards. This is often measured by the Gini coefficient, where a higher value indicates greater inequality.
收入不平等是指经济体内收入分配不均的状况。虽然不平等有别于贫困，但高度的不平等会使减贫更加困难。当经济增长主要惠及富人时，穷人的生活水平可能几乎没有改善。这通常用基尼系数来衡量，系数越高表示越不平等。
Extreme inequality can also reduce social mobility and lead to political instability, further harming the poor. Policies aimed at reducing relative poverty often focus on redistributing income through progressive taxation and welfare spending, narrowing the gap between the highest and lowest earners.
极端的不平等还可能降低社会流动性并引发政治不稳定，进一步损害穷人。旨在减少相对贫困的政策通常侧重于通过累进税制和福利支出来再分配收入，缩小最高与最低收入者之间的差距。
8. Consequences of Poverty for Individuals and Economies | 贫困对个人与经济的影响
For individuals, poverty is linked to poor physical and mental health, lower life expectancy and limited educational attainment. Children growing up in poverty often face low self-esteem, social exclusion and fewer opportunities for upward mobility. The stress of financial insecurity can also harm family relationships and increase crime rates in communities.
对于个人而言，贫困与身心健康状况不良、预期寿命较低以及教育程度有限密切相关。在贫困中长大的儿童常常面临低自尊、社会排斥以及向上流动机会减少的问题。经济不安全的压力还可能损害家庭关系，并提高社区的犯罪率。
From an economic perspective, widespread poverty reduces aggregate demand and acts as a drag on economic growth because a large portion of the population cannot afford to buy goods and services. It also means the economy is not using its full human potential, leading to lower productivity and output. In the long term, poverty can impose high fiscal costs through increased spending on healthcare, welfare and criminal justice systems.
从经济角度来看，普遍贫困会减少总需求，拖累经济增长，因为大部分人口无力购买商品和服务。这也意味着经济没有充分利用其全部人力潜能，导致生产率和产出降低。长期来看，贫困可能因医疗、福利和刑事司法系统支出的增加而产生高昂的财政成本。
9. Government Policies to Reduce Poverty: Economic Growth | 减少贫困的政府政策：经济增长
Sustained and inclusive economic growth is widely regarded as one of the most effective ways to reduce absolute poverty in the long run. When an economy grows, average incomes rise, generating more tax revenue that the government can use to fund public services. Market-based policies such as trade liberalisation, support for small businesses and investment in infrastructure can stimulate employment and raise productivity.
持续且包容的经济增长被广泛认为是长期减少绝对贫困最有效的方法之一。当经济增长时，平均收入上升，产生更多税收收入，政府可用于资助公共服务。以市场为基础的政策，如贸易自由化、支持小企业以及基础设施投资，可以刺激就业并提高生产率。
However, growth alone is not always enough. If growth is jobless or benefits only a small elite, poverty may persist despite rising GDP. Therefore, growth must be accompanied by policies that ensure the poor can participate in and benefit from the expanding economy – for example, through improved access to credit, land and skills training.
然而，仅有增长并不总是足够的。如果增长不创造就业或只惠及少数精英，尽管GDP上升，贫困仍可能持续。因此，增长必须辅以政策，确保穷人能够参与并受益于扩张的经济——例如，通过改善获得信贷、土地和技能培训的机会。
10. Government Policies to Reduce Poverty: Redistribution and Social Safety Nets | 减少贫困的政府政策：再分配与社会安全网
Interventionist policies aim to directly support the poor through redistribution of income. Progressive taxation takes a larger proportion of income from high earners, and the revenue is used to fund public services like free education and healthcare, as well as cash transfers to low-income households. These measures reduce relative poverty and improve equality of opportunity.
干预主义政策旨在通过收入再分配直接支持穷人。累进税制从高收入者那里收取更大比例的收入，所得资金用于资助免费教育和医疗等公共服务，以及向低收入家庭提供现金转移支付。这些措施减少相对贫困并改善机会平等。
Social safety nets, including unemployment benefits, food stamps, child allowances and state pensions, provide a minimum standard of living for vulnerable groups. While critics argue that excessive welfare spending may create dependency, well-designed safety nets can break the poverty trap by allowing households to invest in education and health without the immediate pressure of survival.
社会安全网，包括失业救济、食品券、儿童津贴和国家养老金，为弱势群体提供最低生活标准。虽然批评者认为过度的福利支出可能造成依赖，但设计良好的安全网可以通过让家庭在没有即时生存压力的情况下投资教育健康，从而打破贫困陷阱。
11. International Efforts and the Sustainable Development Goals | 国际努力与可持续发展目标
Poverty is a global challenge, and international organisations play a vital role in coordinating anti-poverty efforts. Goal 1 of the United Nations Sustainable Development Goals (SDGs) is to 'End poverty in all its forms everywhere' by 2030. This includes targets for eradicating extreme poverty, reducing by half the proportion of people living in poverty according to national definitions, and implementing social protection systems.
贫困是一项全球性挑战，国际组织在协调反贫困努力中发挥着关键作用。联合国可持续发展目标（SDGs）的第一项就是到2030年“在世界各地消除一切形式的贫困”。这包括消除极端贫困、按照各国定义将生活在贫困中的人口比例减半，以及实施社会保护体系等具体目标。
Foreign aid, debt relief and fair trade policies are tools used by developed countries and global institutions to support poverty reduction in developing nations. The World Bank and IMF provide loans and technical assistance tied to poverty reduction strategies. For IGCSE students, evaluating the effectiveness of such international cooperation is an important skill, considering both successes and criticisms relating to donor dependency and misallocation of resources.
对外援助、债务减免和公平贸易政策是发达国家和全球机构用来支持发展中国家减贫的工具。世界银行和国际货币基金组织提供与减贫战略挂钩的贷款和技术援助。对于IGCSE学生，评估此类国际合作的有效性是一项重要技能，需考虑成功经验以及与捐助依赖、资源分配不当相关的批评。
Published by TutorHao | Economics Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图