Policy Points Changes in US state policies since the 1970s, particularly after 2010, have
played an important role in the stagnation and recent decline in US life expectancy. Some …

Extensive empirical health research leverages variation in the timing and location of policy
changes as quasi-experiments. Multiple social policies may be adopted simultaneously in …

This study develops and tests a theory of the diffusion life course using a dataset of 566
policies adopted between 1960 and 2016. Previous small‐N studies found differences …

Despite its rich tradition, there are key limitations to researchers' ability to make
generalizable inferences about state policy innovation and diffusion. This paper introduces …

Although a long literature has analyzed how policies diffuse or spread across the American
states, scant attention has been given to how states invent or create original policy instead of …

In recent years, the federal government's increasing inability to address major societal
challenges has arguably hampered America's commitment to renewable energy initiatives …

Over the last quarter century, a nationalized and increasingly conservative Republican Party
made unprecedented gains at the state level, winning control of twenty-four new state …

The policy innovation literature does not mention any systemic analysis of sexual freedom
laws. Sexual freedom, since the sexual revolution of the 1960s, has been increasing over …

In the aftermath of the Supreme Court's landmark decision Obergefell v. Hodges (2015),
legalizing same-sex marriage nationwide, many commentators highlighted increasing …

Abstract The United States state legislative system can be considered one of the most
significantly unique aspects of American democracy. While broadly similar, state legislatures …