We develop a theory of optimal stopping problems under ambiguity in continuous time. Using results from (backward … from the agent's ambiguity aversion. We show how to use these general results for search problems and American Options. …

We consider optimal stopping problems for ambiguity averse decision makers with multiple priors. In general, backward …

information structures; complete separations of attitudes toward risk and ambiguity; and new classes of preferences that allow … decreasing relative ambiguity aversion and thereby rationalize recent challenges to many of the extant multiple prior models of … ambiguity aversion. We also characterize a property of sets of priors, descriptive completeness, that resolves several open …

others behave ambiguity averse in the sense of Knight (1921). If ambiguity averse agents meet overly optimistic subjective …

strategies form the perspective of an ambiguity averse buyer. The multiple prior setting relaxes the presumption of a known …

. We extend this strategic use of objective ambiguity to extensive form games. We show that with rectangularity of Ellsberg …