Not Getting the Message on Climate? Attention as a Key Barrier to Mass-Marketing Experimentally-Validated Messages

Nicholas Carnes and Geoffrey L. Henderson

British Journal of Political Science, 2025, vol. 55, -

Abstract: Scholars often use survey experiments to evaluate political messages’ persuasive effects, but messages developed in the lab do not always persuade in real-world campaigns. In this research note, we report three experiments on one central obstacle in lab-to-field messaging applications: getting people’s attention. We first analyze a large-scale direct mail campaign run by an established non-profit that promotes conservative solutions to climate change. In this experiment, postcards with messages based on extant survey-experimental research did not cause changes in key climate attitudes. In a follow-up survey experiment, identical postcards induced attitude change— Re but only when participants were required to pay attention to them. A final field experiment highlights the difficulty of inducing attention; in another real-world campaign, postcards with eye-catching scratch-off panels performed no better than standard postcards. These findings illustrate the crucial role of attention and the complexity of translating messages developed in survey experiments into effective real-world campaigns.

Date: 2025
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