We study identification of time inconsistency when an agent at time 0 makes an advance commitment, and later at time 1 can revise their choice after possibly receiving additional information. Roughly speaking, we prove that the only data that reject time-consistent expected utility maximization...

We introduce a model of random ambiguity aversion. Choice is stochastic due to unobserved shocks to both information and ambiguity aversion. This is modeled as a random set of beliefs in the maxmin expected utility model of Gilboa and Schmeidler (1989). We characterize the model and show that...

We consider a sovereign wealth fund that invests broadly in the international financial markets. The influx to the fund has stopped. We adopt the life cycle model and demonstrate that the optimal spending rate from the fund is significantly less than the fund's expected real rate of return. The...

Ellis (2016) introduced a variant of the classic (jury) voting game in which voters have ambiguous prior beliefs. He focussed on voting under majority rule and the implications of ambiguity for Condorcet's Theorem. Ryan (2021) studied Ellis's game when voting takes place under the unanimity...

The Income Stabilization Tool, a risk management scheme introduced within the Common Agricultural Policy (CAP) 2014-2020, could help European Union farmers manage the income risks they face. This study assesses the potential impact of implementing this tool through the maximum level of...

This paper proposes an approximation method to create an optimal continuous-time portfolio strategy based on a combination of neural networks and Monte Carlo, named NNMC. This work is motivated by the increasing complexity of continuous-time models and stylized facts reported in the literature....

The α-MEU model and the smooth ambiguity model are two popular models in decision making under ambiguity. However, the axiomatic foundations of these two models are not completely understood. We provide axiomatic foundations of these models in a symmetric setting with a product state space...

This paper investigates beliefs in an ambiguous environment. In contrast to many previous studies, the beliefs regarding possible scenarios are measured independently from attitudes. We use laboratory experiments to estimate the entire distribution of subjective beliefs and examine how beliefs...