The traditional marshallian rule of investing when the value of the investment is greater than its installment cost is modified in the presence of irreversibility and uncertainty, giving rise to an option component. Additionally, the interaction of participants holding each one a right to invest...

While modern theorising on the microfoundation of macroeconomics makes intense use of the representative firm notion, severe objections have been raised. Regarded from the history of thought this is the second time that its usefulness is called into question. The paper presents an old literature...

Accounting for observed uctuations in aggregate employment, consumption, and real wage using optimality conditions of a representative household often requires preferences that are incompatible with economic priors (e.g., Mankiw, Rotemberg, and Summers, 1985). This discrepancy between the...

This paper describes a Choice Modelling experiment set up to investigate the relationship between distance and willingness to pay for environmental quality changes. The issue is important for the estimation and transfer of benefits. The Choice Modelling experiment allows testing distance effects...