Sandy Hook, Aurora, the Washington Navy Yard, Fort Hood, and Emanuel African Methodist Episcopal Church in Charleston, S.C. These place names signify terrible tragedies that continue to prompt deep reflection from policymakers and the public about how to stop acts of mass violence in the United States.

A new working paper from scholars at the University of Connecticut and Georgia State University finds that alcohol sales decreased in states that have legalized medical marijuana since 2006.

Academic research is one of journalists’ best tools for covering public policy issues. It’s also a tool that takes skill to use.

Experienced journalists use research to ground their work and fact-check claims made by politicians, policymakers and others. Many journalists, however, are not trained in research methods and statistical analysis. Some have difficulty differentiating between a quality study and a questionable one.