Climate Change Communication and Misinformation
Climate Change Communication and Misinformation
From persuasion to denial: two faces of climate messaging
The papers under this topic together stake out a field where what is said about climate change — and how — is treated as an empirical object. Voelkel2026-lc approaches the question from the persuasion side, asking whether the canonical messaging strategies in the climate communication literature actually move Americans. Lieu2025-nl approaches it from the opposite pole, asking which forms of contrarian misinformation gain traction. Bravo2026-ue hovers above both, reviewing how the visual layer of climate discourse has been studied at all. Read together, they sketch a field maturing past single-study claims toward systematic, comparative, and replication-oriented evidence.
The shrinking confidence in canonical messages
Voelkel2026-lc delivers what is arguably the strongest corrective to date for climate persuasion research. By running the ten most-cited messaging strategies head-to-head in a preregistered megastudy — preceded by pilots in which several flagship strategies failed to replicate — the authors show that effects are real but small (1–4 percentage points), concentrated on attitudes rather than behaviour, and largely homogeneous across partisan lines. This last finding directly undercuts a substantial literature recommending audience-targeted (often Republican-specific) framings, since only 12 of 90 partisan interactions reached significance. The null effect on actual donations, combined with a backfire from Scientific Consensus 2, dramatizes the attitude–behaviour gap that short-form messaging cannot close.
Misinformation: content matters more than form
Lieu2025-nl complements this picture from the denial side by crossing the CARDS content taxonomy with the FLICC fallacy taxonomy. Strikingly, the logical form of misinformation — whether it relies on cherry-picking, fake experts, impossible expectations, and so on — does not significantly shift perceived veracity. What does matter is content: claims attacking climate solutions are perceived as most credible and, together with attacks on scientists, are the most ideologically polarizing. The asymmetry with Voelkel2026-lc is instructive: where pro-climate persuasion is largely partisan-neutral, anti-climate misinformation is partisan-amplifying, with conservatives disproportionately moved by solution-attacking content. This suggests that the political asymmetry in climate opinion may live more on the denial side than on the persuasion side.
Mechanisms, mediators, and the limits of short-form intervention
Both experimental papers struggle to pin down why messages work or fail. Voelkel2026-lc finds that effective messages typically shift several candidate mediators at once — patriotism, perceived way-of-life threat, disgust, personal relevance — frustrating clean mechanistic claims. Lieu2025-nl similarly finds substantial heterogeneity across individual stimuli within fallacy categories, hinting that something other than rhetorical structure is doing the persuasive work. Both papers thus implicitly point toward content-specific, audience-specific moderators rather than general laws of framing, and both call for the kind of large, comparative designs that can detect such small, conditional effects.
The visual blind spot
Bravo2026-ue reminds us that the experimental literature represented by the other two papers is overwhelmingly textual. Their systematic review of 2005–2024 work on climate visualizations finds the field skewed toward traditional media, Western contexts, and small-N qualitative case studies, with little computational analysis and limited engagement with social media imagery — precisely the environment in which the fake Facebook posts of Lieu2025-nl and the short-form messages of Voelkel2026-lc would actually circulate. The review thus identifies a structural gap: the persuasion and misinformation literatures have moved toward megastudies and taxonomies, while the visual dimension that mediates much real-world climate exposure remains methodologically underdeveloped.
An emerging arc
Taken together, the three papers trace an arc from cataloguing (what messages and images are out there) toward systematic comparative testing (which work, on whom, and why). The persuasion side is converging on humility: effects are small, behaviour is sticky, and partisan tailoring is overrated. The misinformation side is converging on prioritization: not all denialist content is equally dangerous, and solution-attacking claims deserve disproportionate counter-messaging effort. The visual side has yet to undergo this transition. A natural next step — implicit across all three — is comparative, preregistered testing of visual climate communication and misinformation at the scale Voelkel2026-lc and Lieu2025-nl have begun to model for text.