Luttmer, Erzo G. J.; Mariotti, Thomas - London School of Economics (LSE) - 2003
We consider an exchange economy with time-inconsistent consumers whose preferences are additively separable. When these … efficient in this sense, and for generic endowments, if and only if preferences are locally homothetic. For non …-homothetic preferences, the introduction of lottery markets has an ambiguous impact on the equilibrium welfare of consumers at the initial …