Van der Linden is most well-known for his research program that looks at how to protect people from fake news and misinformation.[13][14] The research draws on inoculation theory where, following the biomedical analogy, forewarning people and exposing them to a severely weakened dose of fake news can generate psychological resistance against it.[15][16][17][18]
He co-developed the fake news game Bad News,[19][20] which simulates a social media feed and teaches people about the manipulation techniques used in the production of fake news. A more recent version of the game called GoViral![21] aims to inoculate against misinformation about COVID-19 specifically.
Gateway belief model
Van der Linden is known for the Gateway belief model (GBM),[22] a dual-process theory of reasoning. The model postulates a two-step process of attitude change. In the first step, perceptions of agreement among a group of influential referents (e.g. experts) influence key private attitudes that people may hold about an issue (e.g., that global warming is human-caused). In turn, these central cognitive and affective beliefs are hypothesized to shape public attitudes and support for science.[23] In other words, the model suggests that what underpins people's attitudes toward (often contested) science is their perception of a scientific consensus. Correcting people's (mis)perception of scientific agreement on an issue is therefore regarded as a "gateway" cognition[23] to eliciting subsequent changes in related beliefs that people hold about contested social and scientific issues.[24]
With the consensus heuristic as the primary mechanism for initiating the attitude change, the model finds its theoretical roots in other prominent social psychological theories such as the heuristic-systematic model and the Elaboration Likelihood Model.[24] The model has been applied in a variety of contexts, including climate change,[25][26] vaccination,[27] the Brexit debate,[28] and GMOs.[29] One analysis from Skeptical Science of 37 published papers notes that about 86% of them support the broad tenets of the GBM.[30]
Conspiracy theories
Van der Linden and others have surveyed more than 5,000 Americans online about their political preferences, asking them to respond to questions developed to measure conspiratorial thinking and paranoia. They found that those at the extremes of the political spectrum were more conspiratorial than those in the middle. Researchers also found that conservatives were more prone to conspiracy thinking than liberals. Van der Linden speculates that this may reflect strong identification with conservative groups and values, and attempts to manage uncertainty.[31]
Bibliography
Books
FOOLPROOF: Why We Fall for Misinformation and How to Build Immunity (HarperCollins), 2023. ISBN9780008466718
Risk and Uncertainty in a Post-Truth Society (Earthscan Risk in Society), 2019. ISBN978-0367235437
^Dixon, Graham (2018). "Applying the Gateway Belief Model to Genetically Modified Food Perceptions: New Insights and Additional Questions". Journal of Communication. 66 (6): 888–908. doi:10.1111/jcom.12260.