This paper axiomatizes a form of recursive utility on consumption processes that permits a role for ambiguity as well as risk. The model has two prominent special cases: (i) the recursive model of risk preference due to Kreps and Porteus [18]; and (ii) an intertemporal version of multiple-priors...

The paper fully characterizes the class of Nash implementable social choice correspondences (SCCs) by mechanisms endowed with Saijo’s message space specification—<InlineEquation ID="IEq1"> <EquationSource Format="TEX">$$s$$</EquationSource> </InlineEquation>-mechanisms. This class of SCCs is equivalent to the class of Nash implementable SCCs, though any game form involving...</equationsource></inlineequation>