The Role and Impact of Value Judgements in Economics | 价值判断在经济学中的角色与影响

📚 The Role and Impact of Value Judgements in Economics | 价值判断在经济学中的角色与影响

Economics is often described as a social science because it studies human behaviour and the allocation of scarce resources. Yet unlike physics or chemistry, economics cannot rely solely on laboratory experiments or universal laws. Instead, economic analysis is frequently shaped by value judgements – subjective opinions about what is fair, good, or desirable. This article explores the role and impact of value judgements in economics, distinguishing them from objective analysis and showing how they influence theory, policy, and evaluation.

经济学常被称为社会科学，因为它研究人类行为与稀缺资源的配置。然而，与物理学或化学不同，经济学不能完全依赖实验室实验或普遍法则。相反，经济分析往往受到价值判断的影响——即关于什么公平、美好或可取的主观意见。本文探讨价值判断在经济学中的角色与影响，区分其与客观分析的差别，并展示它们如何影响理论、政策与评估。

---

1. What Are Value Judgements? | 什么是价值判断？

A value judgement is an opinion based on personal beliefs, ethics, or political ideology rather than on evidence alone. For example, stating that “the government should reduce income inequality” is a normative statement because it expresses a view about what ought to happen. In contrast, stating that “the Gini coefficient in the UK rose from 0.35 to 0.38” is a positive statement because it describes facts that can be tested.

价值判断是基于个人信念、道德或政治意识形态而非纯粹证据的观点。例如，声明“政府应该降低收入不平等”是一个规范性表述，因为它表达了应该发生什么的观点。相反，声明“英国基尼系数从0.35升至0.38”则是实证性表述，因为它描述了可以被检验的事实。

• Positive statements: objective, testable, concerned with “what is”.
• Normative statements: subjective, opinion-based, concerned with “what ought to be”.

• 实证表述：客观、可检验，关心“是什么”。
• 规范表述：主观、基于观点，关心“应该是什么”。

---

2. Positive vs Normative Economics | 实证经济学与规范经济学

The distinction between positive and normative economics is fundamental. Positive economics aims to explain economic phenomena without offering judgments. For instance, “an increase in the minimum wage leads to lower employment among low-skilled workers” is a positive statement that can be empirically tested. However, the decision to raise or not to raise the minimum wage involves value judgements about the trade-off between fairness and efficiency.

实证经济学与规范经济学的区别是基础性的。实证经济学旨在不提供判断地解释经济现象。例如，“最低工资上升导致低技能工人就业减少”是一个实证性陈述，可以通过经验检验。然而，是否提高最低工资的决定涉及关于公平与效率权衡的价值判断。

Positive Economics	Normative Economics
Facts and cause-effect relationships	Opinions and policy recommendations
Testable with data	Not testable in the same way
Example: inflation rose by 2%	Example: inflation should be kept below 2%

实证经济学	规范经济学
事实与因果关系	观点与政策建议
可用数据检验	无法同样检验
例：通胀上升了2%	例：通胀应保持在2%以下

---

3. Role of Value Judgements in Economic Policy Making | 价值判断在经济政策制定中的角色

Policy decisions are rarely purely technical. When a government chooses between reducing taxes or increasing public spending, it makes a value judgement about which outcome is more desirable. For example, a policy to prioritise economic growth over environmental protection reflects a judgement that growth brings greater social welfare. Similarly, decisions about progressive taxation involve judgements about the fair distribution of income.

政策决定很少纯粹是技术性的。当政府选择减税还是增加公共支出时，它在做出关于哪种结果更可取的价值判断。例如，将经济增长优先于环境保护的政策反映了一种判断：增长带来更大的社会福利。同样，累进税制的决定涉及关于收入公平分配的价值判断。

In democratic systems, value judgements are supposed to be expressed through elected representatives. However, economists and advisors also inject their own values, whether consciously or not. Therefore, transparency about underlying assumptions is essential for sound policy analysis.

在民主制度中，价值判断应当通过民选代表来表达。然而，经济学家和顾问也会有意或无意地注入自己的价值观。因此，对潜在假设保持透明对于健全的政策分析至关重要。

---

4. Value Judgements in Model Building and Assumptions | 模型构建与假设中的价值判断

Economic models often rely on simplifying assumptions, such as rational behaviour or perfect information. These assumptions are not purely factual; they embody judgements about which aspects of reality are most important. For example, the homo economicus model assumes that individuals maximise utility, but this ignores altruism or bounded rationality. A researcher who chooses a model is making a value judgement about relevance.

经济模型常常依赖简化假设，例如理性行为或完全信息。这些假设并非纯粹事实；它们体现了关于现实哪些方面最重要的判断。例如，经济人模型假设个体最大化效用，但这忽略了利他主义或有限理性。选择模型的研究者正在做出关于相关性的价值判断。

Moreover, the choice of variables to include – such as GDP rather than the Human Development Index – reveals a judgement about what constitutes progress. If an economist measures welfare solely by output, they implicitly judge that material wealth is the key indicator of well-being.

此外，选择包含哪些变量——例如GDP而非人类发展指数——揭示了关于构成进步的判断。如果一位经济学家仅以产出衡量福利，那么他们隐含地判断物质财富是福祉的关键指标。

---

5. Impact on Economic Forecasting and Evaluation | 对经济预测与评估的影响

Forecasting requires choosing which data to use and how to interpret it. Two economists with the same data may produce different forecasts if they hold different value judgements about, for instance, the reliability of household surveys versus administrative data. More importantly, policy evaluation depends on the chosen criterion. A policy that reduces unemployment might be judged successful, but if it also increases inflation, the assessment depends on whether the evaluator values price stability more than job creation.

预测需要选择使用哪些数据以及如何解释数据。两位经济学家拥有相同数据，但如果他们对例如家庭调查与行政数据的可靠性持有不同价值判断，可能得出不同的预测。更重要的是，政策评估取决于所选择的标准。一项降低失业的政策可能被视为成功，但如果它也提高了通胀，评估取决于评价者更看重价格稳定还是创造就业。

Cost–benefit analysis is a classic example. Allocating a monetary value to a human life or a clean environment is inherently subjective. The chosen value – whether £30,000 or £1 million per life – reflects ethical judgements, yet it profoundly affects whether a project is approved.

成本–收益分析是一个典型例子。为人的生命或清洁环境分配货币价值本质上具有主观性。所选价值——无论每条生命3万英镑还是100万英镑——反映了伦理判断，但它深刻影响项目是否获批。

---

6. Efficiency vs Equity: A Core Value Trade-off | 效率与公平：核心价值权衡

One of the most significant value conflicts in economics is between efficiency and equity. Efficiency, often measured by Pareto optimality, is concerned with maximising total surplus. Equity, in contrast, is about fairness in the distribution of income and wealth. These two goals often conflict. For example, a tax on high earners to fund welfare payments may reduce the incentive to work, lowering efficiency, but it may improve equity.

经济学中最重大的价值冲突之一是效率与公平之间的冲突。效率通常以帕累托最优来衡量，关注最大化总剩余。公平则关于收入与财富分配中的公正性。这两个目标常常冲突。例如，对高收入者征税以资助福利支付可能降低工作激励，从而降低效率，但可能改善公平。

Economists cannot resolve this trade-off using mathematics alone. Whether a society prefers a larger income gap with higher growth or a smaller gap with slower growth is a normative choice. Therefore, textbooks often state that efficiency is a positive concept while equity is a normative one, though even efficiency requires value judgements about what counts as a benefit.

经济学家无法仅靠数学解决这一权衡。社会是更喜欢收入差距较大但增长较快，还是差距较小但增长较慢，这是一个规范性选择。因此，教科书常指出效率是实证概念而公平是规范概念，尽管即使效率也需要关于什么算作收益的价值判断。

---

7. Real-World Examples of Value Judgements | 现实世界中的价值判断案例

The impact of value judgements can be seen in many policy areas. Consider the minimum wage: a positive economist might study its effect on employment, but the decision to introduce or raise it involves a judgement that low-paid workers deserve a living wage. Another example is environmental regulation. Setting a carbon tax rate requires judging how much future generations’ welfare matters relative to current consumption.

价值判断的影响可以在许多政策领域看到。以最低工资为例：实证经济学家可能研究其对就业的影响，但引入或提高最低工资的决定涉及判断：低薪工人应获得生活工资。另一个例子是环境监管。设定碳税税率需要判断未来世代的福利相对于当前消费有多重要。

Austerity measures also illustrate this. After the 2008 financial crisis, some governments chose to cut public spending to reduce deficits, reflecting a judgement that fiscal discipline was more important than short-term social protection. Others chose stimulus packages, judging that job creation and demand mattered more. Both choices were based on values as much as on economic models.

紧缩措施也说明了这一点。2008年金融危机后，一些政府选择削减公共支出以减少赤字，这反映了对财政纪律比短期社会保障更重要的判断。另一些政府选择刺激计划，判断创造就业和需求更为重要。两种选择都基于价值观，与经济模型一样多。

---

8. Criticisms of Value Judgements in Economics | 对经济学中价值判断的批评

Some critics argue that allowing value judgements into economics undermines its claim to be a science. If a researcher’s conclusions depend on personal beliefs, then results are not objective. This is particularly dangerous when policy is made on the basis of such research. Moreover, value judgements can lead to hidden biases, such as assuming that free markets are always superior to government intervention.

一些批评者认为，允许价值判断进入经济学会削弱其作为科学的地位。如果研究者的结论依赖于个人信念，那么结果就不客观。当政策基于此类研究制定时，这尤其危险。此外，价值判断可能导致隐藏偏见，例如假设自由市场总是优于政府干预。

However, defenders point out that avoiding value judgements is almost impossible. Even choosing what to study is a value judgement. The solution is not to eliminate values but to make them explicit. By stating assumptions and normative premises clearly, economists allow others to understand how conclusions might change under different value systems.

然而，捍卫者指出，避免价值判断几乎不可能。甚至选择研究什么也是一种价值判断。解决办法不是消除价值观，而是使它们明确。通过清楚陈述假设和规范性前提，经济学家使他人能够理解在不同价值体系下结论会如何变化。

---

9. Handling Value Judgements in Exam Questions | 考试中如何处理价值判断

For students taking economics exams, understanding value judgements is essential for achieving high marks. Evaluation questions often require you to identify normative assumptions in a policy and to discuss alternative viewpoints. When evaluating, always ask: “What value judgement is being made here?” and “Would a different judgement lead to a different conclusion?”

对于参加经济学考试的学生，理解价值判断对于取得高分至关重要。评估类问题往往要求你识别政策中的规范性假设并讨论替代观点。评估时，始终要问：“这里正在做出什么价值判断？”以及“不同的判断会导致不同的结论吗？”

• Define whether a statement is positive or normative in multiple-choice and short-answer questions.
• Use examples to show how value judgements affect policy choices.
• Conclude by explaining the importance of transparency about values.

• 在选择题和简答题中判断陈述是实证性还是规范性。
• 用例子展示价值判断如何影响政策选择。
• 最后解释对价值观保持透明的重要性。

---

10. Conclusion | 结论

Value judgements play an unavoidable and powerful role in economics. They shape the questions we ask, the models we build, the policies we support, and the way we evaluate outcomes. While positive economics strives for objectivity, it cannot exist without underlying normative choices. Recognising and declaring value judgements improves the credibility and usefulness of economic analysis.

价值判断在经济学中扮演着不可避免且强大的角色。它们塑造了我们提出的问题、构建的模型、支持的政策以及评估结果的方式。尽管实证经济学力求客观，但没有潜在的规范性选择，它就无法存在。识别并声明价值判断可以提高经济分析的可信度和有用性。

In an era of complex economic challenges, from climate change to inequality, transparent reasoning about values is more important than ever. The best economists are not those who hide their values, but those who make them clear so that debates can be framed honestly and decisions can be made democratically.

在从气候变化到不平等的复杂经济挑战时代，对价值观的透明推理比以往任何时候都更加重要。最优秀的经济学家不是那些隐藏其价值观的人，而是那些使价值观清晰可见的人，这样辩论才能被坦诚地构架，决策才能被民主地制定。

Published by TutorHao | Economics Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）