We study the simultaneous dynamics of real house prices and rents in Paris during the period 1962-1994, using a recently published set of data.

The relation between rationality and optimization have been widely discussed in the wake of Herbert Simon's work, with the common conclusion that the rationality concept does not imply the optimization principle. The paper is partly concerned with adding evidence for this view but its main, more...

Following a long-standing philosophical tradition, impartiality is a distinctive and determining feature of moral judgements, especially in matters of distributive justice. This broad ethical tradition was revived in welfare economics by Vickrey, and aboce all, Harsanyi, under the form of the...

In this paper, we estimate a reliable fundamental value of the S&P index, standing for a long run target value in Error-Correcting Modelling of the dynamics of the subsequnet returns. The present Value Model suggests two fundamentals: the dividends and a discount rate factor, specified as a...

This note clarifies some aspects of Berheim's (1986) characterization of Nash and correlated equilibria.

We study the effect of riskiness on optimal portfolio. As discussed by Levy (1992), the main drawback of the standard model witg ine decision variable and one risky asset developed over the last twenty-five years, following the contributions of Rothschild and Stiglitz (1970,1971) and Hadar and...