An impulse response is the dynamic average effect of an intervention across horizons. We use the well-known Kitagawa-Blinder-Oaxaca decomposition to explore a response's heterogeneity over time and over states of the economy. This can be implemented with a simple extension to the usual local...

The recent reform of the Stability and Growth Pact provides more leeway for EU governments to temporarily breach the 3% deficit limit if this facilitates the implementation of initially expensive reforms. But the implementation of this principle is not obvious as budgets would need to specify...