This note examine's Clower's recent criticisms of Keynes' theory of effective demand and argues that Keynes added much to Marshallian theory when he extended to the aggregate level, that his theory does have implications for unemployment without requiring wage rigidity, that his theory does not...

This paper defends the Aggregate-Supply/Aggregate-Demand framework against recent criticisms by Barro and others. Using four models - a neoclassical-synthesis Keynesian, a monetarists mark 1, a rational expectation/new classical, and a Kaleckian/post-Keynesian - based on this framework, it is...