To explore the propagation of undesirable policies in a form of populist extremism, we construct a social learning model featuring agency problems. Politicians in different countries sequentially implement a policy. Voters learn the incumbent politician's type and the desirable policy by...

This study aims at characterizing the optimal regulation of risky activities when risk assessment is subjective as a result of ambiguity on the probability of an accident. The attitudes toward ambiguity held by stakeholders form subjective risk perceptions, which substantially affect the optimal...

To explore the propagation of undesirable policies in a form of populist extremism, we construct a social learning model featuring agency problems. Politicians in different countries sequentially implement a policy. Voters learn the incumbent politician's type and the desirable policy by...

I construct a dynamic model in which an ambiguity-averse principal chooses the agent to whom to delegate the decision among elites (i.e., experts) with uncertain biases and non-elites with no bias in each period. The focus is on the phenomenon that the principal distrusts elites and delegates...

To explore the propagation of populist extremism across countries, we construct a multi-country model wherein each country's politician sequentially implements a policy. Voters learn the incumbent politician's type and the desirable policy by observing foreign policies on top of the domestic...