Dynamic diffusion

Abstract Research on legal diffusion typically focuses on laws’ initial adoption and ignores their later evolution. We develop a typology of three subsequent diffusion patterns: convergence, when countries revise laws to move closer to leading regulators; customization, when countries revise laws to move away from leading regulators; and stagnation, when countries cease legislating, leaving initially adopted laws in place. We then propose a general theory suggesting that economic size and geographic distance from leading regulators predict which of the three patterns countries follow. We explore this theory with case studies on the dynamic diffusion of antitrust laws in Russia, Colombia, and Australia.