Social norms are widely regarded as effective drivers of proenvironmental behavior. Yet their impact is rarely straightforward. While normative influence is well-established in behavioral science, its effectiveness is often bounded by the characteristics of the norm's communicator (Sender), the content and delivery of the norm (Message), and the traits of the person receiving it (Receiver). In this talk, I present a SMeR (Sender-Message-Receiver) framework for understanding and designing persuasive social norms in the context of climate change mitigation.
Building on current literature, this framework identifies key conditions under which normative appeals succeed—or fail. For example, norms communicated by a proximal in-group are more likely to be persuasive than those from distant or rival groups. Likewise, messages that align injunctive and descriptive components, or that emphasize what others avoid doing, can increase persuasive impact. Receivers, meanwhile, are more likely to conform in situations marked by ambiguity, or when personal norms are weak. Importantly, normative influence tends to be underdetected: individuals often fail to recognize the role social norms play in shaping their choices. This underdetection presents both a challenge and an opportunity. While it may limit self-awareness, it can also reduce psychological reactance, enhance perceived autonomy, and promote enduring behavior change.
Taken together, the SMeR framework provides a structured lens for examining the boundary conditions of normative influence. It highlights the interplay of identity, message framing, emotional response, and situational ambiguity in determining behavioral outcomes. Implications for designing more nuanced, culturally sensitive, and impactful climate interventions are discussed, along with directions for future research.