The four areas covered by AEJ are applied economics , economic policy , macroeconomics , and microeconomics .
In 2009 , it began to publish four new area - specific journals , collectively called the American Economic Journal ( AEJ ) .
The four areas covered by AEJ are applied economics , economic policy , macroeconomics , and microeconomics .
In 2009 , it began to publish four new area - specific journals , collectively called the American Economic Journal ( AEJ ) .