When several plaintiffs file individually a lawsuit against the same tortfeasor, the resolution of the various cases through repeated trials produces positive informational externalities, which benefit to the later plaintiffs (since there exist precedents, jurisprudence...). Thus, the first...

This paper elaborates on a basic model of mass tort litigation, highlighting the existence of positive informational externalities afforded by the discovery process (as a general technology of production of evidences) in order to study when a class action is formed, or when a sequence of...