General-Equilibrium Policy Transmission / 一般均衡式政策传导

Definition

General-equilibrium policy transmission is the practice of tracing a shock through budgets, prices, income, expectations, firms, credit, markets, and policy feedback instead of assuming that its first local effect determines the aggregate result.

Current Synthesis

The source’s regulated-utility example supplies the core mechanism. Higher water or electricity prices lift those line items, but households whose budgets do not rise may reduce clothing, food delivery, or other spending. If they also expect weaker future real income, precautionary saving can deepen the offset. Because one person’s spending is another person’s income, individually rational retrenchment can become aggregate contraction.

The method is neither model rejection nor model worship. Models help identify constraints and intertemporal choices; practical macro analysis then observes how micro actors respond, compares forecasts with outcomes, and revises the causal story. Oil-price pass-through, mortgage-rate relief, trade shocks, and leverage-cycle differences show why nominal changes do not automatically become wages, investment, consumption, or growth.

Key Claims

• Local price movement does not determine aggregate inflation when household budgets and substitution effects remain binding.
• Expectations make transmission dynamic because future-income beliefs can change current consumption and saving.
• Individual rationality can aggregate into a worse collective outcome through the paradox of thrift.
• Nominal savings or policy changes affect growth only when firms and households transmit them into prices, wages, investment, borrowing, or spending.
• The same policy can behave differently during leveraging and deleveraging regimes.
• Useful macro analysis combines models, micro response functions, policy feedback, and outcome checks.

Evidence

• Budget and expectation channel: 宏观经济如何传导给我们每个人？ uses utility-price increases and the paradox of thrift to show offsetting consumption and income effects.
• Firm pass-through channel: 宏观经济如何传导给我们每个人？ traces cheaper imported oil through quantities, domestic prices, profit repair, wages, and reinvestment.
• Household and regime channel: 宏观经济如何传导给我们每个人？ links trade shocks to local employment and contrasts mortgage-rate relief with weak borrowing demand during deleveraging.

Counterevidence & Qualifications

The episode provides illustrative mechanisms rather than estimated elasticities or controlled causal studies. Utility pricing can raise measured inflation under other budget, income, and policy conditions; cheaper inputs can transmit more strongly when competition, balance sheets, and demand differ. General-equilibrium language should organize uncertainty, not make every result unfalsifiable.

What Changed

• Added a reusable policy-transmission method grounded in household, firm, and expectation responses.
• Made regime dependence and feedback-based model revision explicit.

Related Concepts

• Neutral Rate Drivers / 中性利率驱动因素 - intertemporal rate-setting relationship.
• Household Deposit Structural Signal / 居民存款结构信号 - saving and banking-structure measurement relationship.
• China Deflation Demand Repair / 中国通缩的需求侧修复 - demand-repair relationship under weak confidence.
• Macro Narrative Micro-Life Gap - scale relationship between aggregate narratives and lived effects.
• Ordinary Investor Macro Boundary - translation boundary from macro understanding to portfolio action.