Exposure to campaign claims in mobile browsing and survey data

Drawing on a two-wave panel study capturing the full log of mobile user activity, we link a behavioural measure of information exposure to survey data on the believability of eight fact-checked claims that were spread during the 2017 UK General Election campaign. We find that the effect of media exposure on the over-time adjustment of beliefs varies depending on the claim. Exposure in three cases led to the adjustment of beliefs if it came from sources congruent with the broader political narrative around these claims, whether correct or incorrect. We find no evidence that balanced media exposure led to correcting beliefs in false statements overall.