著者

BERNHARD ECKWERT

出版者

JAPANESE ECONOMIC ASSOCIATION

雑誌

The Economic Studies Quarterly (ISSN:0557109X)

巻号頁・発行日

vol.44, no.3, pp.193-205, 1993-09-20 (Released:2007-10-19)

参考文献数

21

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Within the framework of a stochastic version of the overlapping generations model a general choice theoretic portfolio approach is presented. Competitive equilibria are shown to be nonoptimal in a Pareto sense (and hence can potentially be improved by some policy action), if there exist two individuals of some generation t, such that the ratio of marginal utilities of future consumption is random. Finally, a short-run welfare criterion is provided, which is based on observable data only. The ordering induced by this criterion on the set of competitive equilibria is not complete, however.