01Model
Build the economic model
Open economies transmit policy through trade, capital, expectations and exchange rates. Domestic objectives can be constrained by external shocks and financial conditions.
For macroeconomic policy in a global economy, state the relationship between policy mix and the relevant agents, then identify the ceteris-paribus conditions. The model is a disciplined simplification, not a complete description of reality.
- Define the central variables precisely.
- Identify the agents making decisions.
- State what is held constant and why that matters.
02Evidence
Apply evidence and data
A global energy shock raises inflation while domestic demand weakens and public debt interest rises.
Application in macroeconomic policy in a global economy means using scale, direction, timing and source to alter the argument. Explain how the evidence changes the mechanism instead of merely naming the context or copying a figure.
- Check units, dates and whether values are nominal or real.
- Separate correlation from a supported causal inference.
- Identify winners, losers and the appropriate counterfactual.
03Analyse
Develop the mechanism
External shock or policy response → exchange, credit, demand and cost channels interact → inflation/output effects differ across agents → feedback crosses borders.
Carry this macroeconomic policy in a global economy chain far enough to answer the question: identify the agent's response, the resulting market or macroeconomic change and why the outcome matters.
- Explain each arrow in the chain.
- Use the diagram or calculation in the written analysis.
- Distinguish short-run adjustment from longer-run response.
04Evaluate
Evaluate assumptions and magnitude
The appropriate mix depends on whether inflation is demand- or supply-driven, fiscal space, credibility, distribution and the response of trading partners.
Evaluation of macroeconomic policy in a global economy should change confidence in the result. Test elasticity, time lags, scale, incentives, distribution and unintended effects rather than adding a generic “however”.
- Which assumption is most fragile?
- Would a different elasticity reverse or only weaken the result?
- What evidence could change the judgement?
05Judge
Reach an informed judgement
For macroeconomic policy in a global economy, choose the argument with the greatest contextual importance and explain why it outweighs the alternative. State the conditions under which it holds rather than repeating the introduction.
The opportunity cost and distributional effect of policy mix matter. Political preferences may affect objectives, but the exam judgement must rest on transparent assumptions and evidence rather than ideology.
- Answer the exact command and scope.
- Rank the decisive factors.
- State a condition, timeframe and possible reason to revise the conclusion.
From theory to a testable claim
Open economies transmit policy through trade, capital, expectations and exchange rates. Domestic objectives can be constrained by external shocks and financial conditions.
Applied taskA global energy shock raises inflation while domestic demand weakens and public debt interest rises.
Causal chain
External shock or policy response → exchange, credit, demand and cost channels interact → inflation/output effects differ across agents → feedback crosses borders.
Applied taskRewrite the macroeconomic policy in a global economy chain with one piece of numerical or contextual evidence at the link where it changes the expected magnitude.
Evaluation that does work
The appropriate mix depends on whether inflation is demand- or supply-driven, fiscal space, credibility, distribution and the response of trading partners.
Applied taskExplain whether this consideration weakens, delays, redistributes or reverses the predicted macroeconomic policy in a global economy outcome.