| Summary: | Abstract Democratic theorists and the public emphasize the centrality of news media to a well-functioning society. Yet, there are reasons to believe that news exposure can have a range of largely overlooked detrimental effects. This preregistered project examines news exposure effects on desirable outcomes, i.e., political knowledge, participation, and support for compromise, and detrimental outcomes, i.e., attitude and affective polarization, negative system perceptions, and worsened individual well-being. We rely on two complementary over-time experiments that combine participants’ survey self-reports and their behavioral browsing data: one that incentivized participants to take a ’news vacation’ for a week (N = 803; 6M visits) in the US, the other to ‘news binge’ for 2 weeks (N = 939; 4M visits) in Poland. Across both experiments, we demonstrate that reducing or increasing news exposure has no impact on the positive or negative outcomes tested. These null effects emerge irrespective of participants’ prior levels of news consumption and whether prior news diet was like-minded, and regardless of compliance levels. We argue that these findings reflect the reality of limited news exposure in the real world, with news exposure comprising on average roughly 3% of citizens’ online information diet.
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