This paper develops a broad theme about policy choice under ambiguity through study of a particular decision criterion … selection of a treatment allocation than as a binary decision. Study of the static minimax-regret criterion and its adaptive …

class of problems of decision under uncertainty in which the argument for collective choice emerges from the mathematics of … aggregating individual payoffs. Consider decision making when each member of a population has the same objective function, which … depends on an unknown state of nature. If agents knew the state of nature, they would make the same decision. However, they …