Decades. Recent developments in areas such as marijuana legalization and same-sex marriage only emphasize the plausibility and relevance of the general argument that policies in one state are influenced by the policies of other states. ( Gilardi , 2015) stated that Meanwhile,parallel literatures have developed in other political science subfields, such as comparative politics and international relations. In this article, there was four
Strategies discuss to improve policy diffusion research and make it more relevant for real-world problems: (1) use existing concepts consistently and improve their measurement, (2) clarify whether the goal is to improve the understanding of diffusion itself or to use diffusion research to explain another phenomenon, (3) pay more attention to the quality of the research design, and (4) discuss explicitly the …show more content…
According to Gilardi, although policy diffusion is essentially a horizontal phenomenon, in federal states the vertical relationship between states and the federal government plays a considerable role (Gilardi, 2015). National statutes influence policy diffusion by affecting the internal factors that make policy adoption not only at the state level more or less likely (Karch 2006) but also at the agenda-setting stage, by increasing the political relevance of some issues over others. Diffusion research has diffused, within and across political science subfields, for a good reason: it focuses on a key question in social science—the nature and consequences of interdependence—that has direct implications for political phenomena in many areas, and especially for policy making in federal states (Gilardi, 2015). Policy diffusion occurs when government policy decisions in a given (jurisdiction) are systematically conditioned by prior policy choices made in other (jurisdictions) (Gilardi,