Keynesian Economics

Why this is disputed. Keynesian accounts attribute 1970s stagflation primarily to cost push pressure from the 1973 oil embargo and other supply shocks, which raised prices even as they contracted aggregate supply and slowed growth.

Why this is disputed. Keynesian analysis of the 2008 financial crisis centers on the policy response required once the crisis hit, arguing that aggressive fiscal stimulus and monetary easing were needed to prevent the collapse in private demand from producing a downturn as severe and prolonged as the Great Depression.

Why this is disputed. Keynesians read the Depression as a demand collapse from a loss of confidence, a reading Monetarists and Austrians each contest on different grounds; see the entity's own description for the three-way dispute.

Why this is disputed. Early Keynesians read the relationship as a usable short-run policy trade-off between inflation and unemployment.

Why this is disputed. Keynesians attribute the cycle chiefly to swings in aggregate demand and investor confidence (animal spirits).

Why this is disputed. Keynesians read inflation as arising from demand-pull or cost-push pressure specific to circumstances, a different causal emphasis from the Monetarist claim already on record here that inflation is always and everywhere a monetary phenomenon.

Why this is disputed. Keynes himself, in The Economic Consequences of the Peace, weighted reparations and the external transfer problem more heavily than domestic money creation as the crisis' root cause, a reading later monetary historians (e.g. Bresciani-Turroni) contested.

Why this is disputed. Supply-side economics emerged as an alternative to Keynesian demand management, arguing that expanding aggregate supply through lower marginal tax rates and lighter regulation, not stimulating aggregate demand, is the effective route to growth.

Why this is disputed. Austrian business cycle theory treats a recession as the necessary correction of malinvestment caused by an artificial credit expansion, not a demand shortfall to be offset by government stimulus; Austrians hold that Keynesian stimulus delays the correction and can seed a new boom-bust cycle.

Why this is disputed. Milton Friedman's monetarism holds that controlling the growth rate of the money supply, not fiscal spending, is the effective and non-inflationary way to manage the business cycle, directly challenging the Keynesian reliance on fiscal policy to fight downturns.

Why this is disputed. New classical economists blamed 1970s stagflation on Keynesian demand-management policy, and Robert Lucas's Lucas critique argues Keynesian macro-econometric models lack the microeconomic foundations needed to predict how agents actually respond to a policy change.