Altruism or `regard for others' can encourage self-restraint among generators of negative externalities, thereby mitigating the externality problem. We explore how introducing impure altruism into standard regulatory settings alters regulatory prescriptions. We show that the optimal calibration...

ldquo;Whistle-blowingrdquo; is an increasingly common element of regulatory enforcement programs and one that is encouraged by recent legislation in the United States and elsewhere. We examine how responsive regulators should be to whistle-blower tip-offs and how severe should penalties be for...