We conducted a field experiment to measure the effect of exposure to newspapers on political behavior and opinion. Before the 2005 Virginia gubernatorial election, we randomly assigned individuals to a Washington Post free subscription treatment, a Washington Times free subscription treatment,...

This paper reports the results of a natural field experiment to measure the effect of exposure to newspapers on political behavior and opinion. The Washington DC area is served by two major newspapers, the Washington Times and the Washington Post. We randomly assigned individuals either to...

There is substantial evidence that media sources have identifiable political slants, but there has been relatively little study until recently of the effects on political views and behaviors of media bias or access. This paper reports the results of a natural field experiment to measure the...

This paper reports the results of a natural field experiment to measure the effect of exposure to newspapers on political behavior and opinion. The Washington DC area is served by two major newspapers, the Washington Times and the Washington Post. We randomly assigned individuals either to...

We were asked to discuss specific methodological approaches to evaluating three hypothetical interventions. This article uses this forum to discuss three misperceptions about randomized trials. First, nobody argues that randomized trials are appropriate in all settings, and for all questions....