The Impact of Investigative Reporting on Public Opinion and Policymaking Targeting Toxic Waste

This article reports the fourth in a continuing series of case studies that explore the impact of news media investigative journalism on the general public, policymakers, and public pol- icy. The media disclosures in this field experiment had limited effects on the general public but were influential in changing the attitudes of policymakers. The study describes how changes in public policymaking resulted from collaboration between journal- ists and government officials. The authors develop a model that is a beginning step toward specifying the conditions under which media investigations influence public attitudes and agendas. This article reports the fourth in a series of field experiments that test the agenda-setting hypothesis (McCombs and Shaw, 1972) for news