Paul C. Stern

New Environmental Theories: Toward a Coherent Theory of Environmentally Significant Behavior

This article develops a conceptual framework for advancing theories of environmentally significant individual behavior and reports on the attempts of the author’s research group and others to develop such a theory. It discusses definitions of environmentally significant behavior; classifies the behaviors and their causes; assesses theories of environmentalism, focusing especially on value-belief-norm theory; evaluates the relationship between environmental concern and behavior; and summarizes evidence on the factors that determine environmentally significant behaviors and that can effectively alter them. The article concludes by presenting some major propositions supported by available research and some principles for guiding future research and informing the design of behavioral programs for environmental protection. Recent developments in theory and research give hope for building the understanding needed to effectively alter human behaviors that contribute to environmental problems. This article develops a conceptual framework for the theory of environmentally significant individual behavior, reports on developments toward such a theory, and addresses five issues critical to building a theory that can inform efforts to promote proenvironmental behavior.

Value Orientations, Gender, and Environmental Concern

A social-psychological model is developed to examine the proposition that environmentalism represents a new way of thinking. It presumes that action in support of environmental quality may derive from any of three value orientations: egoistic, social-altruistic, or biospheric, and that gender may be implicated in the relation between these orientations and behavior. Behavioral intentions are modeled as the sum across values of the strength of a value times the strength of beliefs about the consequences of environmental conditions for valued objects. Evidence from a survey of 349 college students shows that beliefs about consequences for each type of valued object independently predict willingness to take political action, but only beliefs about consequences for self reliably predict willingness to pay through taxes. This result is consistent with other recent findings from contingent valuation surveys. Women have stronger beliefs than men about consequences for self, others, and the biosphere, but there is no gender difference in the strength of value orientations.

Influences on Attitude-Behavior Relationships A Natural Experiment with Curbside Recycling

A simple model was tested in which attitudinal factors and external conditions act in combination to influence behavior. The model predicts that behavior is a monotonic function of attitudes and external conditions and that the strength of the attitude-behavior relationship is a curvilinear function of the strength of the external conditions, with extreme values setting boundary conditions on the applicability of attitude models. The model also allows for interactions in which perceived costs enter into the attitudinal process. Evidence is taken from a natural experiment in recycling in which collection bins for curbside pickup had been provided to 26% of 257 survey respondents. Consistent with the model, main effects of attitudes and external conditions were found, as was an interaction effect in which the Schwartz norm-activation model predicted recycling behavior only for households without bins. Interactive models such as the one developed here can yield better policy-relevant analyses by clarifying the relationships between external and internal influences on behavior change.

Social Structural and Social Psychological Bases of Environmental Concern

Efforts to explain environmental concern as a function of social structure have revealed some weak but reliable associations. Stronger associations have been found between environmental concern and social psychological variables including attitudes, beliefs, and worldviews. The authors used the 1993 General Social Survey to explore a conceptual framework that postulates four causal levels: social structural factors and early socialization experiences; general worldview and ideology about humanity and the environment; specific attitudes, beliefs, and cognitions about environmental issues; and environmentally relevant behavior. Each class of variable has explanatory power beyond that given by other classes of variables, with the social psychological variables generally adding more explanatory power than the structural variables. The patterns are different, however, for the five behavioral indicators. Efforts to explain the structural influences as indirect, operating through the social psychological variables, were mainly unsuccessful.

Household actions can provide a behavioral wedge to rapidly reduce US carbon emissions

Most climate change policy attention has been addressed to long-term options, such as inducing new, low-carbon energy technologies and creating cap-and-trade regimes for emissions. We use a behavioral approach to examine the reasonably achievable potential for near-term reductions by altered adoption and use of available technologies in US homes and nonbusiness travel. We estimate the plasticity of 17 household action types in 5 behaviorally distinct categories by use of data on the most effective documented interventions that do not involve new regulatory measures. These interventions vary by type of action and typically combine several policy tools and strong social marketing. National implementation could save an estimated 123 million metric tons of carbon per year in year 10, which is 20% of household direct emissions or 7.4% of US national emissions, with little or no reduction in household well-being. The potential of household action deserves increased policy attention. Future analyses of this potential should incorporate behavioral as well as economic and engineering elements.

Public Understanding of Climate Change in the United States

This article considers scientific and public understandings of climate change and addresses the following question: Why is it that while scientific evidence has accumulated to document global climate change and scientific opinion has solidified about its existence and causes, U.S. public opinion has not and has instead become more polarized? Our review supports a constructivist account of human judgment. Public understanding is affected by the inherent difficulty of understanding climate change, the mismatch between peoples usual modes of understanding and the task, and, particularly in the United States, a continuing societal struggle to shape the frames and mental models people use to understand the phenomena. We conclude by discussing ways in which psychology can help to improve public understanding of climate change and link a better understanding to action. (PsycINFO Database Record (c) 2011 APA, all rights reserved).

Information, Incentives, and Proenvironmental Consumer Behavior

The article discusses the factors influencing proenvironmental consumer behaviors and the policy implications of knowledge about these influences. It presents a conceptual framework that emphasizes the determining roles of both personal and contextual factors and especially of their interactions. The practical usefulness of the framework is illustrated by evidence of the interactive effects of information and material incentives – typical interventions in the personal and contextual domains, respectively. The author concludes that incentives and information have different functions, so that efforts focused on only one are sometimes misplaced; however, properly deployed, they can have synergistic effects on behavior. Some policy conclusions are drawn for consumer and environmental policy.

Energy use: the human dimension

This book discusses the major social and political components of energy policy. By putting energy in its human context, the report generates new policy options for solving specific energy problems and suggests broad new approaches to energy policy. Commissioned by the Department of Energy, the book demonstrates the folly of making energy decisions without a basic understanding of the continuing social conflict over the nature of energy and the many noneconomic factors that influence its use. It emphasizes the importance of seeing energy problems and solutions in terms of social systems rather than single causes; designing energy systems for adaptability as an alternative to detailed planning; and treating energy policies and programs as the social experiments they are. The contents are: The Human Dimension; Thinking About Energy; Some Barriers to Energy Efficiency; Individuals and Households as Energy Users; Operations and Energy Consumption; Energy Emergencies; Local Energy Action; Conclusions and Recommendations.

A Brief Inventory of Values

The authors present a brief inventory derived from Schwartzs 56-item instrument measuring the structure and content of human values. The inventorys four 3-item scales, measuring the major clusters called Self-Transcendence, Self-Enhancement, Openness to Change, and Conservation (or Traditional) values, all produce scores with acceptable reliability in two studies of pro-environmental attitudes and actions, and the brief inventory predicts those indicators nearly as well as much longer ones. The authors also present subscales of biospheric and altruistic values that can be used to assess whether Self-Transcendence values are differentiated in this way in special samples such as environmental activists. The brief inventory is suitable for use in survey research and other settings in which the longer instrument might be impractical.

Global environmental change: Understanding the human dimensions

Global environmental change often seems to be the most carefully examined issue of our time. Yet understanding the human side--human causes of and responses to environmental change--has not yet received sustained attention. Global Environmental Change offers a strategy for combining the efforts of natural and social scientists to better understand how our actions influence global change and how global change influences us. The volume is accessible to the nonscientist and provides a wide range of examples and case studies. It explores how the attitudes and actions of individuals, governments, and organizations intertwine to leave their mark on the health of the planet. The book focuses on establishing a framework for this new field of study, identifying problems that must be overcome if we are to deepen our understanding of the human dimensions of global change, presenting conclusions and recommendations.