Partisan Bias in Episodes of Political Violence

Abstract

Imagine two incidents of political violence. In the first, you share political affiliation with the victim. In the second, they reside in the opposite party. How would this minor change – a shifting label, the difference of a word – impact your reaction? This article offers empirical insight through an experiment: U.S. participants read a mock college controversy, where a student sent death threats to, and doxed, a professor. The treatment varied whether the perpetrator described the professor as a Democrat, Republican, or used otherwise non-descript (e.g., “political”) adjectives. A posttreatment survey then measured respondents’ discrete emotions, the penalties they preferred the student receive, and their partisan group identity strength. Participants who read about violence against a copartisan victim showed a statistically significant increase in preferred penalty severity. But violence against an outparty victim mirrored the control, with subjects reacting as if they didn’t know the political affiliation of anyone involved. Posttreatment measures also demonstrated the potential for anxiety (but not anger or partisan strength) to mediate this underlying partisan bias.