Agencies charged with regulating complex risks such as food safety or novel substances frequently need to take decisions on risk assessment and risk management under conditions of ambiguity, i.e. where probabilities cannot be assigned to possible outcomes of regulatory actions. What mandates...

Pesticides, while rendering immense agricultural benefits, potentially entail risks to human health and the environment. To limit these risks, market approval of a pesticide is typically conditional on an extensive risk assessment demonstrating its safety. The associated testing procedures,...

[Einleitung] Der Begriff Climate Engineering (CE) fasst verschiedene Technologien zusammen, mit denen bewusst in das Klimasystem der Erde eingegriffen wird, um den anthropogenen Klimawandel zu begrenzen. Dabei lassen sich die CE-Technologien von den herkömmlichen Vermeidungs- und...

Experts often disagree. A decision-maker may be averse to such expert disagreement. Existing models of aversion to expert disagreement rest on ambiguity-averse preferences adopting a unanimity principle: If all experts consider one choice better than another, so should the decision-maker. Such...

The well-known Blackwell's theorem states the equivalence of statistical informativeness and economic valuableness. Celen (2012) generalizes this theorem, which is well-known for subjective expected utility (SEU), to maxmin expected utility (MEU) preferences. We demonstrate that the underlying...

Agencies charged with regulating complex risks such as food safety or novel substances frequently need to take decisions on risk assessment and risk management under conditions of ambiguity, i.e. where probabilities cannot be assigned to possible outcomes of regulatory actions. What mandates...

Experts often disagree. A decision-maker may be averse to such expert disagreement. Existing models of aversion to expert disagreement rest on ambiguity-averse preferences adopting a unanimity principle: If all experts consider one choice better than another, so should the decision-maker. Such...