A strategic mechanism of price adjustment is introduced to explain inflations in the U.S. during 1909-1974. The mechanism follows from our theory that when the profit rate is above a normal-target rate, competitive forces operate to lower prices while if the profit rate is below the target a...

We explore a New Keynesian Model with diverse beliefs and study the aggregation problems in the log-linearized economy. We show the solution of these problems depend upon the belief structure. Agents' beliefs are described by individual state variables and satisfy three Rationality Axioms,...

Today’s demand for social insurance is supported by economic reasoning showing that private insurance markets do not provide efficient coverage for medical insurance, for inter-generational risk sharing and for income instability. It is unfashionable to say but government intervention in these...