📚 Economics Knowledge Checklist
经济学知识点复习清单

📋 Fundamental Economic Concepts | 基础经济概念

核心原理:经济学的基本问题源于有限的 resources 与无限的 human wants 之间的矛盾

理解要点:

  • Scarcity 是相对概念,不等同于绝对短缺
  • 所有社会都面临 scarcity 问题
  • Scarcity 导致选择的必要性
定义:做出某项选择时所放弃的次优选择的价值
Opportunity Cost = 放弃的最高价值选项

关键特征:

  • 总是指放弃的最佳 alternative
  • 是理性 decision making 的重要依据
Market Economy:price mechanism(看不见的手)调节 resource allocation
Command Economy: government 集中决策和 resource allocation
Mixed Economy: market mechanismgovernment regulation 相结合
Traditional Economy: 依据 traditional customs 进行 economic activities

📈 Demand Theory | 需求理论

有效需求:consumers 必须同时具备 willingness to buyability to pay

DemandQuantity Demanded 的区别:

  • Demand: 整个 price-quantity relationship curve
  • Quantity Demanded: 特定 price 下的 demand quantity
基本关系:pricequantity demandednegative correlation

理论基础:

  • Income effect: price 下降增加实际 purchasing power
  • Substitution effect: 相对 price 变化影响 consumption choice
  • Diminishing marginal utility: 额外消费的 satisfaction 递减
Quantity Demanded 变化:price 变化导致 equilibrium 沿 demand curve 移动
Demand 变化:demand curve 整体位移

导致 demand curve 平移的因素:

  • Consumer income 水平变化
  • Related goods pricessubstitutes, complements)变化
  • Consumer preferences and expectations 变化
  • Population size and structure 变化

📊 Supply Theory | 供给理论

供给:producers 在不同 price levels 下愿意且能够提供的商品数量关系

SupplyQuantity Supplied 的区别:

  • Supply: 整个 price-quantity relationship
  • Quantity Supplied: 特定 price 下的 supply quantity
基本关系:price 上升 → quantity supplied 上升;price 下降 → quantity supplied 下降

影响 supply 的主要因素:

  • Production costsraw materials, labor, technology
  • Production technology 水平
  • Number of producers
  • Government policiestaxes, subsidies, regulations
  • Producer expectations

⚖️ Market Equilibrium | 市场均衡

Market Equilibrium: quantity supplied 等于 quantity demanded 时的市场状态

供需变化的市场效应:

  • Demand 增加:demand curve 向右移动 → price 上升,quantity 增加
  • Demand 减少:demand curve 向左移动 → price 下降,quantity 减少
  • Supply 增加:supply curve 向右移动 → price 下降,quantity 增加
  • Supply 减少:supply curve 向左移动 → price 上升,quantity 减少

🔬 Economic Analysis Levels | 经济分析层次

研究范围:individual economic unitsconsumers, firms)的 decision-making behavior

主要内容:

  • Consumer choice theory
  • Firm production and costs
  • Market structure and competition
  • Factor market analysis
研究范围:整体经济的运行和政策

核心指标:

  • National income and economic growth
  • Employment and unemployment
  • Inflation and price level
  • International trade and exchange rates

💰 Money and Banking System | 货币与银行体系

Barter System 局限:需要 double coincidence of wants

Money 出现的原因:

  • 减少 transaction costs
  • 提高 exchange efficiency
  • 克服 barter 的困难
三大基本职能:
  • Medium of Exchange: 交换媒介,促进 trade
  • Unit of Account: 价值尺度,衡量价值
  • Store of Value: 价值储藏,保存财富
Fiat Money 特征:价值基于 government creditlegal backing

Banking system 结构:

  • Central Bank: 制定 monetary policy,控制 money supply
  • Commercial Banks: taking depositsmaking loans

🏛️ Government in Economy | 政府经济作用

主要 economic functions

  • 提供 public goods and services
  • 调节 business cycle 波动
  • 维护 market competition 秩序
  • Income redistribution
  • Macroeconomic stability
主要目标:
  • Price Stability: 维持适度 inflation level
  • Full Employment: 实现充分就业
  • Sustainable Economic Growth: 促进可持续增长
  • External Balance: 维持 balance of payments

📊 Economic Indicators | 经济指标

GDP: 一定时期内一国境内生产的 final goods and servicesmarket value 总和
Real GDP vs Nominal GDP:
  • Nominal GDP: 按当期 prices 计算
  • Real GDP: 剔除 price changes 影响,便于跨期比较
  • GDP per capita: 衡量 living standards 的更好指标
Unemployment Rate = (失业人数 ÷ Total Labor Force) × 100%

Unemployment 类型:

  • Frictional: job search 过程中的 temporary unemployment
  • Structural: 技能不匹配导致的失业
  • Cyclical: economic cycle 导致的失业
  • Seasonal: seasonal factors 导致的失业
四个阶段:Expansion → Peak → Recession → Trough

周期特征:

  • Expansion: output 增长,employment 增加,investment 活跃
  • Peak: economic activity 达到最高水平
  • Recession: output 下降,unemployment 增加,investment 减少
  • Trough: economic activity 处于最低水平
CPI: Consumer Price Index 衡量 consumer prices 变化
Inflation Rate = [(CPI₂ - CPI₁) ÷ CPI₁] × 100%

CPI 的局限性:

  • Quality improvement bias
  • Substitution bias
  • New product bias
  • 可能高估 cost of living 上升

📈 Economic Policy Tools | 经济政策工具

政策类型:

  • Expansionary: 增加 government spending,减少 taxes(刺激经济)
  • Contractionary: 减少 government spending,增加 taxes(抑制过热)

主要工具:

  • Interest rate 调节:影响 borrowing costsinvestment
  • Money supply 控制
  • Open market operations
  • Reserve requirement ratio
政策效应:降息鼓励 borrowinginvestment,升息抑制 inflation
概念:income and wealth distribution 的不均等现象

原因:

  • Skills and education 差异
  • Market mechanism 作用
  • Institutional and policy factors
  • 历史和社会因素

💡 Study Strategy | 学习策略