This paper assesses the quantitative impact of ambiguity on the historically observed equity premium. We consider a Lucas-tree pure exchange economy with a single agent where we introduce two key non-standard assumptions. First, the agent's beliefs about the dividend/consumption process is...

This paper assesses the quantitative impact of ambiguity on the historically observed equity premium. We consider a Lucas-tree pure–exchange economy with a single agent where we introduce two key non- standard assumptions. First, the agent's beliefs about the dividend/consumption process is...

We investigate consequences of ambiguity on efficient allocations in an exchange economy. Ambiguity is embodied in the model uncertainty perceived by the consumers: they are unsure what would be the appropriate probability measure to apply to evaluate consumption and keep in consideration a set...

This paper assesses the quantitative impact of ambiguity on historically observed financial asset returns and growth rates. The single agent, in a dynamic exchange economy, treats the conditional uncertainty about the consumption and dividends next period as ambiguous. We calibrate the agent's...