Origins
Macroeconomics descended from the once divided fields of business cycle theory and monetary theory. The quantity theory of money was particularly influential prior to World War II. It

Macroeconomic policy is usually implemented through two sets of tools: fiscal and monetary policy. Both forms of policy are used to stabilize the economy, which can mean boosting the economy to the level of GDP consistent with full employment.

1. ^ Samuelson, Robert (2020), "Goodbye, readers, and good luck — you'll need it", The Washington Post This article was an opinion piece expressing despondency in the field shortly before his

Aggregate demand–aggregate supply
The AD-AS model has become the standard textbook model for explaining the macroeconomy. This model shows the price level and level of real

Macroeconomics encompasses a variety of concepts and variables, but there are three central topics for macroeconomic research. Macroeconomic theories usually relate the phenomena of output, unemployment, and inflation. Outside of macroeconomic theory,

• Dynamic stochastic general equilibrium
• Economic development