Web-browsing patterns reflect and shape mood and mental health

Christopher A. Kelly () and Tali Sharot ()
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Christopher A. Kelly: University College London
Tali Sharot: University College London

Nature Human Behaviour, 2025, vol. 9, issue 1, 133-146

Abstract: Abstract Humans spend on average 6.5 hours a day online. A large portion of that time is dedicated to information-seeking. How does this activity impact mental health? We assess this over four studies (n = 1,145). We reveal that the valence of information sought affects mental health, which in turn influences the valence of information sought, forming a self-reinforcing loop. We quantified the valence of text on webpages participants chose to browse using natural language processing and found that browsing more negative information was associated with worse mental health and mood. By manipulating the webpages browsed and measuring mood and vice versa, we show that the relationship is causal and bidirectional. Finally, we developed an intervention that altered web-browsing patterns in a manner that improved mood. Together, the findings suggest that the information sought reflects mental state and shapes it, creating a loop that may perpetuate mental health problems. The results also provide a potential method for assessing and enhancing welfare in the digital age.

Date: 2025
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DOI: 10.1038/s41562-024-02065-6

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