C. Tyler DesRoches

The concept of ‘nudge’ has sparked intense debate among scholars, ranging from staunch opposition to fervent advocacy. While ethical concerns such as paternalism and autonomy violations rightfully dominate discussions, there remains a significant gap in the literature concerning neglected themes in nudging. This article argues for a reevaluation of the literature among philosophers of economics and economic methodologists by highlighting three critical themes that warrant further exploration. Firstly, amidst predominant focus on traditional welfare nudging, there is a compelling case for prioritizing social nudging aimed at addressing broader societal issues such as negative consumption and production externalities. The urgency of collective action problems such as climate change necessitates a moral imperative to examine the ethics and effectiveness of social nudges. Secondly, the separation between ethical considerations and empirical efficacy in nudging research is overly simplistic. The interplay between the ethics and efficacy of nudging interventions demands integrated analysis, challenging scholars and scientists alike to bridge disciplinary divides for more comprehensive insights. Lastly, I will argue that the impact of cross-cultural differences on the applicability and ethical dimensions of nudging strategies is often overlooked. The reliance on data from WEIRD populations (Western, Educated, Industrialized, Rich, and Democratic) limits the generalizability of behavioral insights, highlighting the need for culturally inclusive approaches in behavioral science and policy formulation. By addressing these neglected themes, this article advocates for a more nuanced and interdisciplinary approach to understanding and implementing nudging strategies in public policy.

Green nudges (GNs) are increasingly popular behavioral interventions aimed at mitigating environmentally mediated harm, particularly in the context of climate change. The justification of GNs traditionally relies on cost-benefit analysis (CBA), which quantifies the total costs and benefits, factoring in probabilities to maximize expected utility. However, the application of CBA faces significant challenges when GNs involve potential catastrophic outcomes associated with climate change and climate nudging. We argue that the qualitative distinction between catastrophic and non-catastrophic outcomes poses a challenge for traditional CBA. While CBA is adept at assessing ordinary costs and benefits, it struggles to accommodate the putative catastrophic outcomes linked to climate change and climate nudging. To address this challenge, this article considers the lexical precautionary principle (LPP) as a viable decision-making framework for climate nudging. Unlike CBA's decision rule, maximize expected utility, LPP maximizes lexical utility, thereby prioritizing the avoidance of catastrophic outcomes.

Across 8 studies (N = 1724, seven were pre-registered), we construct and validate the 10-item Ecological Humility Inventory (EHI), a self-report measure of ecological humility, a novel moral psychological orientation characterized by recognition of the limits of humanity’s knowledge, power, and control over nature and emphasizes the need for humanity to be aware of its interdependence with and subsequent respect for the natural world. In Study 1, Prolific workers generated traits central to the construct to aid in item generation. Studies 2a-2c examined the face validity of the items in expert samples and the general population. Studies 3a-3b and 4a-4b provided evidence for the validity (construct, convergent, discriminant, predictive) and reliability of the scale. The inventory displayed psychometric properties that met stringent fit criteria (invariance across US demographic groups and dynamic fit indexes). Higher scores on the EHI correlated positively with other constructs predictive of concern for nature (environmental identity, nature connectedness, awe, anthropomorphism of nature and animals), character virtues, and prosocial tendencies (empathic concern, perspective taking, patience, sincerity, fairness, modesty, honesty-humility). Scores also correlated negatively with ecological and social dominance orientation, anthropocentrism, speciesism and human superiority beliefs. Importantly, scores also predicted increased performance in a behavioral measure of proenvironmentalism, even after controlling for environmental identity and nature connectedness. We conclude that ecological humility is a character virtue that demands further exploration as an avenue for both rethinking the human-nature relationship, promoting human flourishing, and motivating sustainable behavior.

A just transition from fossil fuels to renewable energy has been associated with a variety of duties, including climate change mitigation and promoting procedural, distributive, and recognitional justice. Several authors have discussed transitional justice tensions between the need for rapid greenhouse gas emissions reductions and other aspects of a just transition, such as fair inclusion of stakeholders. We make the case that such trade-offs are often uncertain, and that this has important moral implications tied to inductive risks. Inductive risks arise when decision-making requires accepting or rejecting an uncertain statement, where the moral harms of errors may be asymmetrical. This line of reasoning suggests that very strong evidence should be required to accept that imposing injustices on marginalized populations is necessary for rapid emissions reductions. [Open access]

From a traditional environmental ethics perspective, rights of nature are linked to debates about non-anthropocentrism because they give legal force to the idea that nature has intrinsic moral value. However, we claim that the emergence of Indigenous-led rights of nature initiatives shows that intercultural respect is also an important aspect of this issue. Supported by an example involving an Indigenous nation in Peru, we explain how intercultural respect encourages greater engagement between Western and Indigenous philosophies. On this basis, we advance an argument that a river can be a living being with interests of its own. We also explain how intercultural respect is helpful for understanding the relationship between rights of nature and climate change. In general, our contention is that rights of nature should be understood in the context of efforts to counteract the disrespect of marginalized groups commonly found in environmental injustices. [Open access]

A number of universities have implemented policies to increase the proportion of plant-based items offered by their food services as part of efforts to promote environmental sustainability and health. This article explores student freedom as an ethical issue in this context. Our central claim is that, while freedom is indeed an important ethical concern for university plant-based food initiatives, these efforts can avoid unjustifiably interfering with freedom if certain conditions are met. We suggest four criteria: (1) public messaging surrounding dietary choices should avoid stigmatizing meat-eating, (2) menus should retain some animal-source foods and ensure that plant-based substitutes included nutritionally fortified and whole food options, (3) the aggressiveness of the transition should be calibrated to student support, and (4) plant-based menu items should be appealing on their own terms. [Open access]

ABSTRACT Ecological economics is an interdisciplinary science that is primarily concerned with developing interventions to achieve sustainable ecological and economic systems. While ecological economists have, over the last few decades, made various empirical, theoretical, and conceptual advancements, there is one concept in particular that remains subject to confusion: critical natural capital. While critical natural capital denotes parts of the environment that are essential for the continued existence of our species, the meaning of terms commonly associated with this concept, such as ‘non-substitutable’ and ‘impossible to substitute,’ require a clearer formulation then they tend to receive. With the help of equations and graphs, this article develops new definite account of critical natural capital that makes explicit what it means for objective environmental conditions to be essential for continued existence. The second main part of this article turns to the question of formally modelling the priority of conserving critical natural capital. While some ecological economists have maintained that, beyond a certain threshold, critical natural capital possesses absolute infinite value, absolute infinite utility models encounter significant problems. This article shows that a relative infinite utility model provides a better way to model the priority of conserving critical natural capital.

Lexical utilities have emerged as a promising way to model the precautionary principle in recent years. But some object that the lexical precautionary principle is hypersensitive because slight increases in risk of catastrophe can prompt it to recommend precautions regardless of cost. This article defends the lexical precautionary principle from the hypersensitivity objection by explaining why costs matter for what it recommends. In addition, we show how minimizing the probability of catastrophe tends to make the lexical precautionary principle insensitive to the precise dividing line between catastrophe and non-catastrophe. Finally, our discussion leads to a novel interpretation and justification of a de minimis condition for invoking the precautionary principle.

This dissertation undertakes a philosophical analysis of “natural capital” and argues that this concept has prompted economists to view Nature in a radically novel manner. Formerly, economists referred to Nature and natural products as a collection of inert materials to be drawn upon in isolation and then rearranged by human agents to produce commodities. More recently, nature is depicted as a collection of active, modifiable, and economically valuable processes, often construed as ecosystems that produce marketable goods and services gratis. Nature is depicted as consisting of various unproduced mechanisms or “natural machines” that are first discovered and then channeled so as to serve human ends. In short, nature as an ideal is a kind of garden that is characterized by natural objects purposefully arranged by intentional human agents. This dissertation first lays out working definitions of the key terms, such as capital and Nature, and then traces the historical roots of natural capital in the writings of eminent classical political economists, such as Adam Smith, John Stuart Mill, and Karl Marx. I then examine the question of substitutes for “critical natural capital”, and argue that the preservation paradox is warranted: no one can restore or preserve a part of Nature without turning it into an artifact. Following the recent work of Debra Satz and Michael Sandel, I finish my dissertation by situating the question of natural capital in the broader context of whether some goods should not be for sale, particularly those I define as Basic Ecological Goods.

We claim that a moral obligation to take climate leadership by means of unilateral mitigation depends on the existence of a plausible follow-the-leader mechanism whereby unilateral mitigation by some increases the probability of sufficient mitigation by others to avert catastrophic climate impacts. By understanding these mechanisms, we can better articulate the obligation for climate leadership across various sectors, from government to individual actors, in the fight against climate change. [Open access]

[Newspaper opinion] If you’re like most people, you’ve been taught that climate action is a sacrifice. Cutting emissions from fossil fuels, you’ve probably been told, is the economy-squeezing price we must pay for a livable planet. But our research explains why we should look at this issue through a different frame. Frames help us think about complex issues. They suggest starting assumptions, problems to be solved and point towards possible solutions. Sacrifice frames begin with the assumption that climate action is a burdensome cost. Given that assumption, it naturally follows that climate action is all about convincing people to make sacrifices. But scholars have criticized sacrifice frames for being bad at motivating action. Tell a person to sacrifice, and they’re likely to give you a list of reasons why they shouldn’t have to do it. We suggest a different approach. Instead of explaining why you should sacrifice for the climate, we explain why climate action isn’t a sacrifice. We also suggest an alternative, more hopeful frame that fits with current science. [Open access]

In this article, we claim that recent developments in climate science and renewable energy should prompt a reframing of debates surrounding climate change mitigation. Taken together, we argue that these developments suggest (1) global climate collapse in this century is a non-negligible risk, (2) mitigation offers substantial benefits to current generations, and (3) mitigation by some can generate social tipping dynamics that could ultimately make renewables cheaper than fossil fuels. We explain how these claims undermine familiar framings of climate change, wherein mitigation is understood as self-sacrifice that individuals and governments must be morally persuaded or incentivized to undertake. [Open access]

American philosopher Wilfrid Sellars (1962) once said that “the aim of philosophy, abstractly formulated, is to understand how things in the broadest possible sense hang together in the broadest possible sense.” My main question is this: within the context of contemporary sustainability science, how does the concept of ‘sustainability’ in the broadest possible sense of the concept hang together in the broadest possible sense? I will answer this question by advancing two new explicative definitions of sustainability that jointly constitute a unifying concept of sustainability. This meta-level concept accommodates most of the central meanings conventionally assigned to ‘sustainability’ by sustainability scientists and scholars, offers a useful division of labor between scientists and scholars, and makes explicit value judgements commonly associated with the concept of sustainability.

This review article provides a new perspective on the ethics of green nudging. We advance a new model for assessing the ethical permissibility of green nudges (GNs). On this model, which provides normative guidance for policymakers, a GN is ethically permissible when the intervention is (1) efficacious, (2) cost-effective, and (3) the advantages of the GN (i.e. reducing the environmental harm) are not outweighed by countervailing costs/harms (i.e. for nudgees). While traditional ethical objections to nudges (paternalism, etc.) remain potential normative costs associated with GNs, any such costs must be weighed against the injunction to reduce environmental harm to third parties.

Despite recognizing many adverse impacts, the climate science literature has had little to say about the conditions under which climate change might threaten civilization. Discussions of the mechanisms whereby climate change might cause the collapse of current civilizations has mostly been the province of journalists, philosophers, and novelists. We propose that this situation should change. In this opinion piece, we call for treating the mechanisms and uncertainties associated with climate collapse as a critically important topic for scientific inquiry. Doing so requires clarifying what "civilization collapse" means and explaining how it connects to topics addressed by climate scientists. [Open access]

Confronted with the possibility of severe environmental harms, such as catastrophic climate change, some researchers have suggested that we should abandon the principle at the heart of standard decision theory—the injunction to maximize expected utility—and embrace a different one: the Precautionary Principle. Arguably, the most sophisticated philosophical treatment of the Precautionary Principle is due to Steel. Steel interprets PP as a qualitative decision rule and appears to conclude that a quantitative decision-theoretic statement of PP is both impossible and unnecessary. In this article, we propose a decision-theoretic formulation of PP in terms of lexical utilities. We show that this lexical model is largely faithful to Steel’s approach, but also that it corrects three problems with Steel’s account and clarifies the relationship between PP and standard decision theory. Using a range of examples, we illustrate how the lexical model can be used to explore a variety of issues related to precautionary reasoning.

Communication plays an important role in promoting sustainable consumption. Yet how the academic literature conceptualizes and relates communication and sustainable consumption remains poorly understood, despite growing research on communication in the context of sustainable consumption. This article presents the first comprehensive review of sustainable consumption communication (SCC) research as a young and evolving field of scholarly work. Through a systematic review and narrative synthesis of N = 67 peer-reviewed journal articles, we consolidated the research conducted in this field into four distinct types: communication as an approach to (1) behavior change, (2) self-empowerment, (3) systems change, and (4) reflection on current discourses and practices around sustainable consumption. Our findings reveal that most journal articles focus on incremental changes in individual consumer behavior (“weak” sustainable consumption) and employ communication as an intervention tool with little reference to communication science and theory. They also reveal integration challenges arising from the disciplinary diversity and fragmentation characteristic of the research field. Future research should develop shared frameworks and terminology, diversify its foci, synthesize relevant evidence, and innovate critical perspectives that go beyond one-way business-to-consumer communication. The results of our review can serve researchers engaged in sustainable consumption communication to better systematize their efforts and contribute more effectively to changing systems of consumption in the future.

While no one denies that science depends on epistemic values, many philosophers of science have wrestled with the appropriate role of non-epistemic values, such as social, ethical, and political values. Recently, philosophers of science have overwhelmingly accepted that non-epistemic values should play a legitimate role in science. The recent philosophical debate has shifted from the value-free ideal in science to questions about how science should incorporate non-epistemic values. This article engages with such questions through an exploration of the environmental sciences. These sciences are a mosaic of diverse fields characterized by interdisciplinarity, problem-orientation, policy-directedness, and ubiquitous nonepistemic values. This article addresses a frequently voiced concern about many environmental science practices: that they ‘crowd out’ or displace significant non-epistemic values by either (1) entailing some non-epistemic values, rather than others, or by (2) obscuring discussion of non-epistemic values altogether. With three detailed case studies e monetizing nature, nature-society dualism, and ecosystem health e we show that the alleged problem of crowding out emerges from active debates within the environmental sciences. In each case, critics charge that the scientific practice in question displaces nonepistemic values in at least one of the two senses distinguished above. We show that crowding out is neither necessary nor always harmful when it occurs. However, we do see these putative objections to the application of environmental science as teaching valuable lessons about what matters for successful environmental science, all things considered. Given the significant role that many environmental scientists see for non-epistemic values in their fields, we argue that these cases motivate lessons about the importance of value-flexibility (that practices can accommodate a plurality of non-epistemic values), transparency about value-based decisions that inform practice, and environmental pragmatism.

Evidence that humans play a dominant role in most ecosystems forces scientists to confront systems that contain factors transgressing traditional disciplinary boundaries. However, it is an open question whether this state of affairs should encourage interdisciplinary exchange or integration. With two case studies, we show that exchange between ecologists and economists is preferable, for epistemological and policy-oriented reasons, to their acting independently. We call this “exchange gain.” Our case studies show that theoretical exchanges can be less disruptive to current theory than commonly thought. Valuable interdisciplinary exchange does not necessarily require disciplinary breakdown.

Everywhere in the world, and in every period of human history, it has been common for energy decisions to be made in an ethically haphazard manner. With growing population pressure and increasing demand for energy, this approach is no longer viable. We believe that decision makers must include ethical considerations in energy decisions more routinely and systematically. To this end, we propose an applied ethics framework that accommodates principles from three classical ethical theories—virtue ethics, deontology, consequentialism, and two Native American ethics (Lakota and Navajo)—all considered from the perspectives of the impacted communities. We illustrate this framework by evaluating five recent energy decisions: the Dakota Access Pipeline, the Navajo Nation’s possible transition from coal to solar, hydraulic fracturing in Pennsylvania, uranium mining in Virginia, and the construction of the Xiaolangdi Dam in China. An applied ethics framework is preferable to existing ethical analyses because it can serve to sharpen arguments for (un)ethical decisions and action. Rather than treat ethical reasoning as a matter of opinion, we argue that applying ethical principles in a universal and standardized way adds rigor to energy sector decisions by presenting a position available for objective scrutiny. Because our framework identifies which aspects of a targeted action (if any) must adjust to improve ethical merit, it can serve as a practical tool for improving decision-making as we enter a new era of energy transitions.

Background The purpose of this study was to examine whether extended use of a variety of screen-based devices, in addition to television, was associated with poor dietary habits and other health-related characteristics and behaviors among US adults. The recent phenomenon of binge-watching was also explored. Methods A survey to assess screen time across multiple devices, dietary habits, sleep duration and quality, perceived stress, self-rated health, physical activity, and body mass index, was administered to a sample of US adults using the Qualtrics platform and distributed via Amazon Mechanical Turk (MTurk). Participants were adults 18 years of age and older, English speakers, current US residents, and owners of a television and at least one other device with a screen. Three different screen time categories (heavy, moderate, and light) were created for total screen time, and separately for screen time by type of screen, based on distribution tertiles. Kruskal-Wallis tests were conducted to examine differences in dietary habits and health-related characteristics between screen time categories. Results Aggregate screen time across all devices totaled 17.5 h per day for heavy users. Heavy users reported the least healthful dietary patterns and the poorest health-related characteristics – including self-rated health – compared to moderate and light users. Moreover, unique dietary habits emerged when examining dietary patterns by type of screen separately, such that heavy users of TV and smartphone displayed the least healthful dietary patterns compared to heavy users of TV-connected devices, laptop, and tablet. Binge-watching was also significantly associated with less healthy dietary patterns, including frequency of fast-food consumption as well as eating family meals in front of a television, and perceived stress. Conclusions The present study found that poorer dietary choices, as well as other negative health-related impacts, occurred more often as the viewing time of a variety of different screen-based devices increased in a sample of US adults. Future research is needed to better understand what factors among different screen-based devices might affect health behaviors and in turn health-related outcomes. Research is also required to better understand how binge-watching behavior contributes impacts health-related behaviors and characteristics.

Ecological economics is an interdisciplinary science that is primarily concerned with developing interventions to achieve sustainable ecological and economic systems. While ecological economists have, over the last few decades, made various empirical, theoretical, and conceptual advancements, there is one concept in particular that remains subject to confusion: critical natural capital. While critical natural capital denotes parts of the environment that are essential for the continued existence of our species, the meaning of terms commonly associated with this concept, such as ‘non-substitutable’ and ‘impossible to substitute,’ require a clearer formulation then they tend to receive. With the help of equations and graphs, this article develops new definite account of critical natural capital that makes explicit what it means for objective environmental conditions to be essential for continued existence. The second main part of this article turns to the question of formally modeling the priority of conserving critical natural capital. While some ecological economists have maintained that, beyond a certain threshold, critical natural capital possesses absolute infinite value, absolute infinite utility models encounter significant problems. This article shows that a relative infinite utility model provides a better way to model the priority of conserving critical natural capital.

Sustainability science seeks to extend scientific investigation into domains characterized by a distinct problem-solving agenda, physical and social complexity, and complex moral and ethical landscapes. In this endeavor it arguably pushes scientific investigation beyond its usual comfort zones, raising fundamental issues about how best to structure such investigation. Philosophers of science have long scrutinized the structure of science and scientific practices, and the conditions under which they operate effectively. We propose a critical engagement between sustainability scientists and philosophers of science with respect to how to engage in scientific activity in these complex domains. We identify specific issues philosophers of science raise concerning current sustainability science and the contributions philosophers can make to resolving them. In conclusion we reflect on the steps philosophers of science could take to advance sustainability science.

Given the endowment effect, the role of attention in decision-making, and the framing effect, most behavioral economists agree that it would be a mistake to accept the satisfaction of revealed preferences as the normative criterion of choice. Some have suggested that what makes agents better off is not the satisfaction of revealed preferences, but ‘true’ preferences, which may not always be observed through choice. While such preferences may appear to be an improvement over revealed preferences, some philosophers of economics have argued that they face insurmountable epistemological, normative, and methodological challenges. This article introduces a new kind of true preference – values-based preferences – that blunts these challenges. Agents express values-based preferences when they choose in a manner that is compatible with a consumption plan grounded in a value commitment that is normative, affective, and stable for the agent who has one. Agents who choose according to their plans are resolute choosers. My claim is that while values-based preferences do not apply to every choice situation, this kind of preference provides a rigorous way for thinking about classic choice situations that have long interested behavioral economists and philosophers of economics, such as ‘Joe-in-the-cafeteria.’

Many ecological economists have argued that some natural capital should be preserved for posterity. Yet, among environmental philosophers, the preservation paradox entails that preserving parts of nature, including those denoted by natural capital, is impossible. The paradox claims that nature is a realm of phenomena independent of intentional human agency, that preserving and restoring nature require intentional human agency, and, therefore, no one can preserve or restore nature (without making it artificial). While this article argues that the preservation paradox is more difficult to resolve than ordinarily recognized, it also concludes by sketching a positive way to understand what it means to preserve natural capital during the Anthropocene.