Green and Good? Examining Intended and Unintended Effects of Morally Framed Climate Messages

Based on Moral Foundations Theory, message framing, and the Sacred Values Protection Model, this pre-registered experiment tested the effects of five different moral frames in climate change messages among N = 715 U.S. adults. Contrary to prior research, we did not find evidence that matching a message's moral frame to individuals' endorsements of moral foundations enhances intended positive outcomes, including perceived message effectiveness (PME) and policy support. However, a moral frame mismatch did reduce PME. Also contrary to scholarly warnings about potential negative effects of moralized communication, we did not find evidence for unintended consequences of moral frame matching for outgroup perceptions. Political ideology did moderate the effect of moral framing on desired social proximity (i.e. willingness to interact with moral outgroup members) and perceived message effectiveness. Our findings raise questions about the benefits of using moral frames that invoke only one moral foundation in climate change communication.