If agents learn-by-doing and are myopic, less advanced firms might adopt new technologies while more advanced ¿rms stick with the old technology. This kind of overtaking can also occur if agents are forward looking and have high discount rates. However, overtaking never occurs if agents are...

A large number of our daily activities are routinized in the sense that they are done without explicit deliberation. We provide a first model that captures this phenomenon. In a dynamic setting routines arise endogenously from the necessity to economize on time and attention. Routines are shown...

A satisfactory account of the postwar growth experience of the United States should be able to come to terms with the following three facts: -Since the early 1970's there has been a slump in the advance of productivity. -The price of new equipment has fallen steadily over the postwar period....

Since central banks have limited information concerning the transmission channel of monetary policy, they are faced with the difficult task of simultaneously controlling the policy target and estimating the impact of policy actions. A tradeoff between estimation and control arises because policy...