We compare behavior in modified dictator games with and without role uncertainty. Subjects choose between a selfish …). While costly surplus creating actions are most frequent under role uncertainty (64%), selfish actions become most frequent … without role uncertainty (69%). Also, the frequency of surplus destroying choices is negligible with role uncertainty (1%) but …

dissolving. Modeling uncertainty by a compact environment around a reference distribution F in the Prohorov metric, we derive the … investigated. We identify Knightian Uncertainty about the peer's distribution as the reason for its deterrent effect of an immature … optimal price announcement for an ambiguity averse divider. The divider hedges against uncertainty for valuations close to the …

uncertainty. Our findings imply that a unifying theory of social risk effects requires new explanations. …

consumer mean. In the uniform case, as the aggregate uncertainty about the mean becomes large relative to the dispersion of …

actions for damages and by limiting the liability of the immunity recipient to its direct and indirect purchasers. Our … improve its effectiveness, through a legal regime in which the civil liability of the immunity recipient is minimized (as in …