In many contexts, warning systems of law enforcement are used to let uninformed individuals learn what is illegal, while sanctions are applied only after a number of repeated violations. Surprisingly no em- pirical evidence is available so far, over the learning impact of warnings. This paper is...

Vector-borne diseases (VBDs) are widespread in less developed countries and re-emerging in developed ones. Available economic studies agree that VBDs induce significant effects on countries' economic outcomes, and affirm that a systematic evaluation of such effects is crucial to the efficient...