Changing Americans’ Attitudes about Immigration: Using Moral Framing to Bolster Factual Arguments
How can the effect of appeals on immigration attitudes be bolstered? Partisans’ tendency to interpret facts consistent with their priors impedes evidence-based persuasion. Accordingly, most prior work finds that favorable information about the impact of immigration has little or no influence on policy preferences. Here we propose that appealing to moral values can bolster the persuasive power of information. Across three experiments (total N = 4,616), we find that an argument based on the value of in-group loyalty, which emphasized that immigrants are critical to America’s economic strength, combined with information about the economic impact of legal immigration, significantly increased Americans’ support for legal immigration. Additionally, we found a significant effect of the moral component of this message, whereas the effect of the information alone was of similar size but only marginally significant. These results show that moral arguments can strengthen the persuasiveness of informational appeals.