We propose a model of instrumental belief choice under loss aversion. When new information arrives, an agent is prompted to abandon her prior. However, potential posteriors may induce her to take actions that generate a lower utility in some states than actions induced by her prior. These losses...

We establish a class of fully nonlinear conditional expectations. Similarly to the usage of linear expectations when a probabilistic description of uncertainty is present, we observe analogue quantitative and qualitative properties. The type of nonlinearity captures the agents sentiments of...

We analyze a clear-cut example of choice under uncertainty, namely deductible choice in the Dutch health insurance market. The unique institutional features of this market enable us to examine demand-side choices that only vary in their financial parameters. Using a rich dataset, we investigate...