Abstract
Human activity is changing the biosphere in unprecedented ways, and addressing this challenge will require changes in individual and community patterns of behavior. One approach to managing individual behaviors is “top-down” and involves imposing sanctions through legislative frameworks. However, of itself, a top-down framework does not appear sufficient to encourage the changes required to meet environmental sustainability targets. Thus, there has been interest in changing individual-level behavior from the “bottom-up” by, for example, fostering desirable pro-environmental behaviors via social norms. Social norms arise from expectations about how others will behave and the consequences of conforming to or departing from them. Meta-analyses suggest that social norms can promote pro-environmental behavior. Environmental social norms that appear to have changed in recent decades and have themselves promoted change include recycling, include nascent behavioral shifts such as the move away from single-use plastics and flight shaming (flygskam). However, whether the conditions under which pro-environmental social norms emerge and are adhered to align with environmental systems’ features is unclear. Furthermore, individuals might feel powerless in a global system, which can limit the growth and influence of pro-environmental norms. We review the conditions believed to promote the development of and adherence to social norms, then consider how those conditions relate to the environmental challenges of the Anthropocene. While promoting social norms has a valuable role in promoting pro-environmental actions, we conclude that norms are most likely to be effective where individual actions are immediately evident and have an obvious and local effect.
“The ongoing process of environmental degradation is thus deeply rooted in multiple large-scale collective action dilemmas, in which individual rationality is pitted against collective goods on regional, national or even global scales.” .
Introduction
Environmental degradation and biodiversity loss are among the most urgent challenges facing humanity (Ripple et al., 2017; ). Business as usual offers little hope of meeting environmental policy targets. Scientists are urged to contribute solutions matching the complexity of the social-ecological issues in question (Rands et al., 2010; ) and to move beyond the “loading dock approach” of delivering science to the public and hoping it will be used (). Integrating social and environmental sciences is essential if biophysical evidence is to be used to inform the development of pro-environmental behaviors by society, industry and government; however, the scales and contexts in which different pro-environmental behaviors will work are unresolved (Ostrom, 2000; Oullier, 2013). Solving environmental problems often requires individuals to cooperate for a common good or goal. These actions, however, sit alongside individual-level conflicts with the group outcome and concerns of inequality where there are benefits for free-riders (; ), or disparities across individuals (or sub-groups) in the costs of taking the same action. Importantly too, people bring their membership of social groups to collective problems, which may include a history of conflict that can reduce people’s willingness to work toward a common goal ().
Recent high-profile publications (Nyborg et al., 2016; ; ; ; Otto et al., 2020) have explored how fostering social norms may initiate and maintain desirable environmental behaviors. Here, we consider the extent to which social norms can contribute to solving large-scale ecological problems. We briefly review the properties of social norms and the conditions under which they are generated and maintained. Then, we summarize how the properties of environmental systems challenge the establishment of pro-environmental social norms. A vast literature exists on achieving behavioral change–social psychology, cognitive science, behavioral economics, regulatory research, and law to name a few. We do not aim to extensively review this material (for reviews see ; Young, 2015; ; Nyborg, 2018). Instead, drawing on the literature, we highlight potential misalignments between norm-fostering conditions and environmental systems, while outlining the contexts where social norms might foster pro-environmental behavior.
What Are Social Norms?
Definitions of social norms vary across disciplines (Nyborg, 2018). However, most agree that they are “standards of behavior that are based on widely shared beliefs as to how individual group members ought to behave in a given situation” (, p. 185). Social norms take many forms, including recurrent patterns of behavior and formalized rule-sets (Morris et al., 2015). argues that subjective social norms, (i.e. the perceived social pressure to participate or not in a behavior) have two components: an empirical expectation about how others do behave and a shared belief in how others should behave (Figure 1); we focus on the former.
FIGURE 1
Social norms underpin social cohesion (
Alignment Between Social Norms and Ecological Systems
To evaluate whether conditions fostering pro-environmental social norms align with the features of environmental systems, we start by outlining the key conditions that determine when social norms emerge or change, drawing on the broad reasons for adherence to social norms identified by Morris et al. (2015). Recalling that our enquiry focuses on the domain of expectations about how people do behave instead of shared beliefs about how they should behave, our review of the literature has a decidedly behavioral flavor–meaning we focus on decisions more than values themselves.
Certainty
Hine and Gifford. (1996) describe two uncertainties relevant to environmental decision-making: social (what will others do?) and contextual (in what setting am I making the decision?). Humans prefer to make decisions and act in contexts where the risks are known (ambiguity aversion) (
Tangibility and Immediacy of Rewards
Ambiguous, diffuse, or future benefits all undermine the likelihood of adopting a behavior (the intergenerational tragedy of the commons; Hauser et al., 2014) as they increase psychological distance. Conversely, vague, ambiguous, or distant rewards might widen the gap between values and actions, (e.g. “I know I should walk to work, but driving is so much quicker and easier.”) (Kollmuss and Agyeman, 2002).
Context
Social norms are tied to locations and the people who inhabit them, (e.g. immediate environment, national identity, cultural identity); in short, social norms are place-bound and context-dependent. Therefore, fostering and promoting social norms usually necessitates localized, bottom-up approaches. Repeated interactions with or within a group are essential to establish rules, form a social contract, copy behaviors, receive approval, and experience disapproval. Social norms are difficult to foster between strangers and where knowledge of the likely behaviors of those being interacted with is limited (
Fairness
Fairness is a core tenet of human moral reasoning (
Signaling/Visibility of Activities
Signaling is an essential component of social norms (
Social Norms in the Face of Uncertainty and Complex Dynamics
The complexity of ecological systems is a dominant theme of environmental research and management (
FIGURE 2

A schematic overview of knowledge-action loops adapted from Sterman. (1994) showing (A) a simple model of decision-information flow and (B) examples of the individual and group-level uncertainties and behaviors that influence knowledge uptake and behavioral change (points below the bolded text). These multi-level uncertainties and behaviors influence the conditions under which social norms can be fostered by influencing individual decisions and hence social approval and sanctioning. These uncertainties are variously irreducible, reducible and exploitable. Figure adapted wth permission from John Wiley and Sons.
Linking individual behaviors to ecological impacts is further obstructed by difficulties in quantifying environmental change and impacts, especially given that an action’s social reward might not mirror its environmental benefit. Quantifying environmental condition and performance is complex and widely debated. There is an extensive technical discussion regarding the merits of a vast array of environmental metrics and indicators (O’Brien et al., 2016; Hillebrand et al., 2018). In the context of social norms, the question is whether these metrics provide an appropriate way to measure the outcomes of an individual’s actions. The answer is, of course, “it depends.”
Some components of ecological systems can be described with metrics, (e.g. physico-chemical measures) and appropriate environmental limits put in place, (e.g. relating to public health outcomes), even if this process can become worryingly politicized (Joy and Canning, 2020). For other facets of ecosystems, such as biodiversity, metrics are context-dependent, (e.g. increase in species richness is not uniformly positive) and tenuously linked to system condition, (e.g. weed and pest species’ impacts are wide-ranging; Mack et al., 2000). Even if biodiversity can be measured, the numbers are not value-free (Stone, 2002). For example, individual and group perception of a species’ value is often biased toward charismatic taxa, (e.g. pandas vs nematodes;
One proposed solution that attempts to bridge the gap between social norms and metrics to measure ecological systems is to recognize and place economic and cultural value on the “ecosystem services” and benefits that arise from ecological entities and functions (
The complexity of environmental systems causes three challenges for behavioral change because it is difficult for an individual to discern: 1) whether a given action (which carries some cost) will have the desired environmental effect; 2) whether there will be an associated social reward; and 3) the magnitude of that reward. The combination of these three factors risks making the individual feel powerless in the face of a large and amorphous problem like climate change. Powerlessness (or lack of self-efficacy) makes it easier for an individual to justify deciding against pro-environmental behavior despite strong pro-environmental values.
Is There a Place for Social Norms in Enhancing PRO-ENVIRONMENTAL Behaviour; and IF SO, what Is It?
Yes, but it is limited and concentrated in the realm of norms we focus on in this paper–expectations about how people do behave, not beliefs about how they should. As such, social norms have a place in decisions about individual behavior, and it is on this decision-making that we focus.
Social norms arise from a need for personal approval, a propensity to imitation, and sanctioning; hence they are, to some degree, internally motivated. In terms of promoting persistent behaviors, this difference between intrinsic and extrinsic motivation matters for two reasons. First, there is a body of psychological evidence suggesting that the use of extrinsic incentives may detract from intrinsic motivation (
We argue that the nature of environmental systems makes it difficult for individuals to estimate the costs and benefits of specific decisions, which is an essential component of rational choice models. Ecosystem service frameworks have a role to play by helping individuals understand the value (monetary or otherwise) of ecosystems (
Given that engrained social norms do support pro-environmental behaviors (
Ultimately, environmental issues require multiple solutions (Otto et al., 2020). Social norms do contribute to the maintenance and change of behavior; however, as we have argued, the potential for using norms to change behavior is likely restricted to specific problems where the rewards of certain behaviors are tangible and outweigh the benefits of not doing it. Many of our environmental issues are spatially diffuse and play out over extended time-frames, which increases our psychological distance from them. In such settings, norms may be less effective. One solution is to reframe what are perceived as global and diffuse issues as local problems that individuals can help to solve; this is not a new idea, it is the essence of the “think global, act local” approach.
Conclusion
If policymakers seek to engineer new, or foster existing, pro-environmental social norms, careful consideration must be given to assessing norms’ effectiveness in specific contexts (social, cultural and ecological). Unfortunately, empirical demonstration of the success of social norms is often lacking, in part because behavioral changes are typically engineered through a mixed-policy response (including regulatory and non-regulatory responses, education, and financial incentives); and government agencies rarely analyze how these policy responses interact. Thus the singular effect of norms is near impossible to assess. Such understanding could improve norms’ influence on behavior. Identifying the characteristics of pro-environmental behavioral initiatives that ‘stick’, compared to those that ultimately fail, would be a valuable step. A stronger focus on the robust evaluation of the contribution of social norms to pro-environmental behaviors and decision-making could guide the development and success of more enduring pro-environmental initiatives.
Statements
Data availability statement
The original contributions presented in the study are included in the article/Supplementary Material, further inquiries can be directed to the corresponding author.
Author contributions
This perspective results from a workshop that all authors attended and contributed substantially to. GP and SR led writing of the manuscript and all co-authors contributed materially to writing and revision of drafts.
Acknowledgments
We acknowledge funding from the Biological Heritage National Science Challenge (Project 3.1) administered by the New Zealand Ministry for Business, Innovation and the Environment.
Conflict of interest
Author DH was employed by company DairyNZ. Author FM was employed by company The Catalyst Group.
The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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Summary
Keywords
pro-environmental behavior, social norms, uncertainty, collective action, psychological distance
Citation
Perry GLW, Richardson SJ, Harré N, Hodges D, Lyver PO’B, Maseyk FJF, Taylor R, Todd JH, Tylianakis JM, Yletyinen J and Brower A (2021) Evaluating the Role of Social Norms in Fostering Pro-Environmental Behaviors. Front. Environ. Sci. 9:620125. doi: 10.3389/fenvs.2021.620125
Received
22 October 2020
Accepted
30 April 2021
Published
04 June 2021
Volume
9 - 2021
Edited by
José Castro-Sotomayor, California State University, Channel Islands, United States
Reviewed by
Wilhelm Peekhaus, University of Wisconsin–Milwaukee, United States
Kate Maddalena, University of Toronto Mississauga, Canada
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© 2021 Perry, Richardson, Harré, Hodges, Lyver, Maseyk, Taylor, Todd, Tylianakis, Yletyinen and Brower.
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*Correspondence: George L.W. Perry, george.perry@auckland.ac.nz
This article was submitted to Science and Environmental Communication, a section of the journal Frontiers in Environmental Science
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