R Kelly Garrett

Numerous studies have shown that individuals’ belief sensitivity—their ability to discriminate between true and false political statements—varies according to psychological and demographic characteristics. We argue that sensitivity also varies with the political and social communication contexts in which they live. Both battleground state status of the state in which individuals live and the level of partisan segregation in a state are associated with Americans’ belief sensitivity. We leverage panel data collected from two samples of Americans, one collected in the first half of 2019 and the other during the 2020 U.S. presidential campaign season. Results indicate that the relationship between living in battleground states and belief sensitivity is contingent on political ideology: living in battleground states, versus in Democratic-leaning states, is associated with lower belief sensitivity among conservatives and higher belief sensitivity among liberals. Moreover, living in a less politically segregated state is associated with greater belief sensitivity. These relationships were only in evidence in the election year.