Environmental value system
An environmental value system (EVS) is a framework that shapes how individuals or groups perceive and respond to environmental issues.
- An Environmental Value System (EVS) is a model that explains how people’s perspectives and actions regarding the environment are shaped by various influences.
- It represents a system of inputs, processes, and outputs that describe how individuals or groups perceive, evaluate, and respond to environmental issues.
Structure of an EVS
Inputs
- Sources of information, beliefs, and experiences that shape environmental understanding.
- Common inputs include:
- Education and science
- Media coverage
- Cultural influences
- Economic priorities
- Political ideology (e.g., capitalism, communism)
- Religious beliefs
- Worldviews or ethics
Processes
- Inputs are interpreted through personal and cultural filters such as values, assumptions, and moral beliefs.
- These filters determine how individuals process environmental information.
- Think of your EVS as a “mental filter.”
- The same piece of news passes through different filters and produces different conclusions, just as light through coloured glass looks different depending on the tint.
Outputs
- Tangible and behavioural outcomes derived from processed inputs, including:
- Judgements (what is right or wrong)
- Positions (opinions or stances on issues)
- Choices (personal or collective decisions)
- Actions (policy-making, activism, consumption habits)
- Input: A student reads about deforestation and climate impacts.
- Process: They evaluate it through an ecocentric value system.
- Output: They advocate for reforestation projects and reduce paper use.
EVS as a System
- Just like ecosystems, EVSs have inputs, outputs, and feedback loops.
- Instead of energy and nutrient flows, EVSs circulate ideas, information, and values through societies.
- EVSs exist within social systems, which include:
- Class-based or democratic societies
- Religion-based or industrial communities
- Capitalist or communist economies
- If asked to draw a systems diagram of an EVS, include:
- Inputs (education, media, culture)
- Processing (values, beliefs, assumptions)
- Outputs (actions, policies, choices)
Classifying Environmental Perspectives
Environmental perspectives
Environmental perspectives are frameworks that guide how individuals and societies interact with the natural world.
- Environmental perspectives, or worldviews, can be categorized into three broad types: Technocentric, Anthropocentric, and Ecocentric.
- These categories help explain how individuals and societies view the environment and their relationship to it.
- However, it's important to note that these categories are not always rigid, as people may hold complex and evolving positions that change over time and in different contexts.
- These perspectives are not static.
- They evolve with new information, societal changes, and personal growth.
1. Ecocentric Worldview (Nature-Centred)
Ecocentrism
Ecocentrism is a philosophy that prioritizes the intrinsic value of nature and advocates for minimal human impact on the environment.
- Values the intrinsic worth of nature, independent of its usefulness to humans.
- Sees humans as part of the biosphere, not masters of it.
- Encourages self-restraint, small-scale community living, and education for sustainability.
- Supports biocentric ethics and “biorights”, the right of species and ecosystems to exist.
Protecting endangered species, promoting wilderness conservation, and supporting eco-centric policies that prioritize the health of ecosystems over economic or human development.
Deep Ecologists
- Believe nature’s value surpasses that of humanity.
- Promote radical change, reducing population growth, consumption, and industrialization.
Self-Reliance Soft Ecologists
- Emphasize small-scale, community-based living.
- Reject materialism and large-scale technology.
- Value local participation, equity, and sustainability.
The Chipko Movement (India) reflected ecocentric principles: villagers hugged trees to prevent deforestation, valuing the forest’s ecological and spiritual importance.
If a question asks for “ecocentric management of water,” focus on conservation, recycling, and habitat protection rather than technological extraction.
2. Anthropocentric Worldview (People-Centred)
Anthropocentrism
Anthropocentrism places human needs at the centre of decision-making but supports managing natural systems for long-term sustainability.
- Sees humans as managers of the planet, responsible for sustainable management through laws, taxes, and regulations.
- Supports debate, consensus, and reform over radical change.
- Considers environmental protection as necessary for human survival and economic stability.
- Promotes sustainable development, balancing human progress and environmental care.
- Uses legislation, policy, and education to guide behaviour.
- A government introducing carbon taxes and pollution laws represents an anthropocentric strategy.
- It manages human activity for sustainability rather than reducing consumption entirely.
3. Technocentric Worldview (Technology-Centred)
Technocentrism
Technocentrism is a worldview that sees technology and human innovation as the primary solutions to environmental problems.
- Places faith in technology and innovation to solve environmental problems.
- Believes human ingenuity can overcome natural limits.
- Sees environmental issues as challenges for science, not signs of crisis.
- Often aligns with cornucopian and environmental manager viewpoints.
Technocentrists see problems as opportunities for innovation, while ecocentrists view them as symptoms of overconsumption.
Cornucopians
- Optimistic about endless human progress and resource availability.
- Believe any problem can be solved through science, innovation, and market efficiency.
- Support economic growth and industrial development as essential for improving living standards.
Environmental Managers
- Support sustainable growth through technological regulation, using tools like carbon capture, desalination, or renewable energy.
- Accept that development can continue if environmental impacts are mitigated.
Development of carbon capture and storage projects to offset CO₂ emissions from industry (BP In Salah project, Algeria).
How and Why Perspectives Evolve
- Environmental beliefs change over time due to:
- Education and awareness campaigns (government, NGOs).
- Scientific discoveries (e.g., climate change evidence).
- Socio-economic transitions (industrialization, urbanization).
- Demographic shifts (younger generations often hold stronger pro-environmental views).
- Cultural globalization (spread of ideas via media and internet).
Greenpeace’s 1970s Save the Whales campaign shifted public perception from viewing whaling as an economic activity to seeing it as an ethical issue of conservation.
Role of Generational Change
- Millennials and Gen Z show stronger engagement with climate change, sustainability, and ethical consumption.
- Older generations often prioritize stability and economic development.
- Surveys show a steady increase in willingness to volunteer, donate, and advocate for environmental causes among younger cohorts.
Behaviour-Over-Time Graphs (BoTGs)
Purpose
- BoTGs display how a particular behaviour (e.g., recycling, smoking, meat consumption) changes over time.
- Time = x-axis, Behaviour/Attitude = y-axis.
- Helps visualize trends, causes, and implications of social or environmental shifts.
Steps to Interpret a BoTG
- Identify the variable changing.
- Describe the trend (increasing, decreasing, fluctuating).
- Explain causes driving the change.
- Discuss implications or significance.
- A BoTG showing reduced smoking from 40% (1960s) to 14% (2020) demonstrates how education and law can shift societal values.
- Similar graphs can track rising vegetarianism or renewable energy adoption.
When interpreting BoTGs, focus on patterns of change (increase, decrease, fluctuation) and link them to causal factors such as campaigns or legislation.
- Identify three types of inputs that influence environmental value systems.
- Distinguish between ecocentric, anthropocentric, and technocentric EVSs.
- Describe how education and media influence EVS inputs and outputs.
- Discuss how demographic change contributes to evolving environmental perspectives.
- Evaluate which EVS category offers the most effective framework for achieving global sustainability


