subjects choose one of the two exogenous defaults. Yet, there is a hard trade-off between ethicality and effectiveness: Self …

understood. We examine under four different information structures how subjects set own defaults in social dilemmas and whether … outcomes differ between the self-nudge and two exogenous defaults, a social (full cooperation) and a selfish (perfect free … online, with defaults triggered by the absence of an active contribution on the day. We find that individuals' own choice of …