This paper proposes the use of optimal grouping methods for determining the various age groups within a population. The cuto� ages for these groups, such as the age from which an individual is considered to be an older person, are then endogenous variables that depend on the entire population...

The classical doctrine of the Lender of Last Resort, elaborated by Thornton (1802) and Bagehot (1873), asserts that the Central Bank should lend to “illiquid but solvent” banks under certain conditions. Several authors have argued that this view is now obsolete: when interbank markets are...

Speculative industries exploit novel technologies subject to two risks. First, there is uncertainty about the fundamental value of the innovation: is it strong or fragile? Second, it is difficult to monitor managers, which creates moral hazard. Because of moral hazard, managers earn agency rents...

The classical doctrine of the Lender of Last Resort, elaborated by Thornton (1802) and Bagehot (1873), asserts that the Central Bank should lend to "illiquid but solvent" banks under certain conditions. Several authors have argued that this view is now obsolete: when interbank markets are...