Keynesian economics emphasises the primacy of aggregate demand or expenditure in driving the growth of output and employment. More mainstream neoclassical Keynesians, and the New Keynesians, tend to argue that inadequate demand is a short run phenomenon. The more radical post-Keynesians argue that it can be a problem in the long run too.
To varying degrees, these economists make the case for demand management via some combination of monetary, fiscal and exchange rate policy. The more radically minded have also long argued for incomes policies to manage wage and price inflation, and reform to the international monetary system in order to allow national governments the space to manage demand and promote full employment while preventing excessive and destabilising current account imbalances.
While Keynesian economics focuses on demand and, traditionally, macroeconomics, industrial policy aims to impact more on the supply-side of the economy and draws on microeconomics. Continue reading