Mechanism
Nominal rigidities, imperfect competition, and expectations jointly shape inflation and output.
Mainstream tradition
New Keynesian
How New Keynesian explains recessions, inflation, and what policy can actually do.
A school becomes useful when it helps you read the same inflation print, recession, or policy error differently from the default story.
Macro map
School lineage
Keep the broader macro map visible while following one argument or stepping across related schools.
Overview
How new keynesian frames the macro problem
Start with the line of thought in plain language before moving into mechanism, criticism, and comparison.
New Keynesian starts from the view that markets can be forward-looking and still display sticky prices, sticky wages, and real short-run policy effects.
In practice, that means macro outcomes are read through nominal rigidities, imperfect competition, and expectations jointly shape inflation and output. The policy instinct that follows is straightforward: use credible monetary policy and targeted stabilization with explicit attention to expectations.
Next move
Keep the diagnosis visible, then open policy or models.
Mechanism
The mechanism this tradition puts at the center.
Every school earns attention by naming the mechanism it thinks mainstream accounts flatten or miss.
Policy instinct
Use credible monetary policy and targeted stabilization with explicit attention to expectations.
Main critiques
- Can still rely too heavily on representative-agent simplifications.
- May underweight banks, leverage, and distribution unless expanded.
How this tradition reads macro problems
The same data point looks different from this line of thought.
This is where disagreement becomes visible: the same unemployment print or inflation spike takes on a different meaning depending on what you think is binding.
Recessions
Can arise when demand weakens and rigid prices or wages slow adjustment.
Inflation
Moves through expectations, marginal costs, and sticky nominal adjustment.
Self-correction
Partial and slow because rigidities create short-run non-neutrality.
Policy
Yes, especially through credible rate policy and expectations management.
Models
New Keynesian models, DSGE, Phillips-curve blocks.
Scenario reading
How this tradition tends to diagnose familiar macro setups.
Scenarios are where the tradition becomes practical rather than historical or taxonomic.
inflation spike
Inflation spike
Ask how expectations, costs, and demand pressure interact through sticky-price adjustment.
recession
Recession
Look for weak demand amplified by nominal rigidities and cautious policy transmission.
rate hike
Interest-rate hike
Works through both current financial conditions and expected future policy.
fiscal stimulus
Large fiscal stimulus
Can raise output when slack is large, but the result depends on state and policy mix.
banking stress
Banking stress
Important because impaired finance tightens conditions and weakens demand.
Routes
Keep the argument visible while you move into policy, models, or related branches.
Once the tradition is legible, the next move is to decide whether to follow its policy instinct, its favored model, or a neighboring branch.
Policy paths
Related model routes
Sources
Keep the lineage visible while you follow the disagreement.
Schools are useful when they stay tied to concrete claims, not when they become labels on their own.
Sources & References
- Clarida, R., Gali, J., and Gertler, M. The Science of Monetary Policy, 1999.
- Woodford, M. Interest and Prices, 2003.
- Snowdon, B. and Vane, H. R. Modern Macroeconomics.