In the Brazilian Amazon, the government wants to build one of the largest hydroelectric dams on Earth, on the Xingu River.
"This dam could supply electricity to 60 million people."
"It will destroy one of the richest river ecosystems on Earth."
"The project will create billions in economic activity."
"My ancestors have lived here for thousands of years."
Who is right?
There is no purely scientific answer. All four are defensible, not because one has the facts wrong, but because each is reasoning from a different perspective. This lesson gives you the vocabulary to analyze exactly why that happens, and by the end, you'll classify all four voices yourself.
Vice-Presidência da República (Brazil), 9 September 2021, CC BY 2.0, via Wikimedia Commons
- Xingu River, Pará, Brazil (completed 2016)
- Installed capacity: 11,233 MW, one of the largest hydropower plants on Earth
- Reported project cost: over US$16 billion
- Diverts roughly 80% of the Xingu's flow, drying a ~100 km stretch known as the "Big Bend"
- Displaced an estimated 40,000+ people; opposed for decades by Indigenous groups including the Juruna, Kayapó, Arara, Xikrín, Xipaia and Kuruaya peoples
Citable in exam answers as a real-world example. The four voices in this lesson are illustrative composite positions, not quotes from named individuals. Full sources in the page footer.
Perspective
Each of the four voices above is stating a perspective: how a situation is viewed and understood by an individual, built from a mix of personal and collective assumptions, values and beliefs. Perspectives give rise to a wide range of positions on the same issue, and they directly drive people's choices and actions, which is exactly why the four voices above disagree about the same dam.
Quick check. The engineer adds: "Hydropower cuts emissions by roughly 80% compared to coal, so this project should go ahead." Is this a perspective, or an argument?
Confusing a perspective (a held position) with an argument (reasoning built to support or counter it). They're related but not interchangeable, and an exam answer that treats them as synonyms will lose marks.
The engineer's perspective (the dam is good) produces an argument (the emissions statistic) that supports a decision (approve construction), which drives action.
Takeaway: culture, religion, law, economics, events and lived experience all feed into a perspective, which is why four people can look at the same dam and land in four different places.
Values
Values are qualities or principles that people feel have worth and importance in life. They're individual, but shared with, and shaped by, a community, and they drive priorities, judgements and choices. Take the conservationist:
Value
"Ecosystem integrity matters, in itself."Protect the river
Action
Opposes the dam publiclyTakeaway: organizations reveal values through ads, media, policy and action. When two groups' values differ, tension follows, even when neither side has the facts wrong.
Design and carry out questionnaires, surveys or interviews, using online collaborative survey tools, to correlate perspectives with attitudes toward a particular environmental or sustainability issue (for example, the dam above). Select a suitable statistical tool to analyze the data.
| Age group | Ecocentric | Anthropocentric | Technocentric | Row total |
|---|---|---|---|---|
| 16–17 | 12 | 18 | 10 | 40 |
| 18–19 | 8 | 14 | 22 | 44 |
| 20–21 | 6 | 16 | 26 | 48 |
| 22+ | 5 | 13 | 30 | 48 |
| Column total | 31 | 61 | 88 | 180 |
Both variables here, age group and EVS category, are categorical, not numerical.
Which statistical tool correctly tests whether there's a significant association between age group and EVS category in a table like this?
Sort: classify each response
Before we name the three broad categories, try sorting these three unrelated scenarios by feel. Classify each, then reveal all answers.
Worldview and the three categories
A worldview is a lens shared by a group of people, through which they perceive, make sense of and act within their environment. Click a stakeholder from the dam scenario below. The same six-step chain builds every time, but the content is entirely theirs.
Note what stays constant (the six-step structure) and what changes (every box's content) as you switch stakeholders. The worldview box deliberately doesn't name a category yet: that's what you'll classify yourself in the activity below.
Treating eco/anthro/technocentric as fixed, exclusive boxes. They aren't: classification models, including the one below, are helpful but invariably imperfect. With the internet and social media, a perspective can now be shaped by a far wider variety of worldviews than just the local community, so individuals often hold a complex, shifting mix of positions.
Try it: drag the marker (or click the track) to explore each category. You'll need these in a moment.
Anthropocentric
Views humankind as the central, most important element of existence, not one fixed view, but a wide range: from a 'stewardship' position (humans have a special responsibility to protect nature) to a more extreme end that treats nature purely as a resource for human use. In conservation, this often means valuing biodiversity for its economic or societal benefit, such as ecotourism, gene banks and zoos (3.3.9).
Not exclusive categories: a variety of alternative schemes exist, and real positions often sit between categories or shift with context. That's why this is a slider, not three separate boxes.
Back to the dam: drag each voice to a category
Drag each stakeholder chip into the category their quote best fits, then reveal the verdict.
How perspectives change
1.1.9: perspectives, and the beliefs behind them, change over time in every society, through NGO/government campaigns or social and demographic change. 1.1.10: the environmental movement itself has been shaped by individuals, literature, media, disasters, agreements, technology and science. You already know these categories: the real skill is generating a real example for each. Try it before revealing.
Any well-explained real example is acceptable in an exam. If you're stuck, here are a few:
- Individual activist: Greta Thunberg's solo school-strike protests (2018) grew into a global youth climate movement.
- Author: Rachel Carson's Silent Spring (1962) reshaped public attitudes to pesticides almost single-handedly.
- Media: Al Gore's An Inconvenient Truth (2006); also No Impact Man (2009), Breaking Boundaries (2021).
- Environmental disaster: Minamata disaster (1956); Chernobyl (1986); Fukushima Daiichi (2011). Each rapidly shifted public and government risk perception.
- International agreement: Rio Earth Summit (1992) and Rio+20 (2012); UN Climate Change Conferences COP21 (2015) and COP27 (2022).
- Technological development: the Green Revolution; reducing enteric fermentation/energy inputs in farming; plant-based meats.
- Scientific discovery: research demonstrating pesticide/biocide toxicity, species loss and habitat degradation, or satellite-based ice-sheet monitoring forcing governments to update climate models.
Interpret behavior-time graphs to track how perspectives translate into lifestyle change over time: for example, changes in smoking, littering, meat consumption, or how traditional lifestyles in Indigenous cultures are being replaced by modern ones.
So, who was right about the dam?
Nobody, and everybody. The engineer, the conservationist, the economist and the Indigenous community representative were each reasoning validly from within their own worldview. That's the entire point of starting the ESS course with 1.1 Perspectives: before we study systems, populations or pollution, we need to notice that data alone never tells us what to do with it.
Perspectives and EVS reappear throughout ESS. Worth revisiting when you reach: choice of conservation strategies (3.3.9); perspectives on waste management (7.3.9); legal personhood granted to natural entities (HL.a.11); environmental economics (HL.b.2); and ecological economics (HL.b.9).
Second look. Back at the start, you predicted which stakeholder was "right." Pick again, now that you've been through the lesson.
What a strong answer does: names the stakeholder's worldview explicitly, links it to their underlying values, and treats their EVS as an internally consistent position rather than a "wrong" one:
"I picked the conservationist, because their worldview treats the river's ecosystem as having worth in itself, not just as a resource. That's an ecocentric position (1.1.6–1.1.8) built from an ecology-focused set of values ('ecosystem integrity matters, in itself', 1.1.3–1.1.4), and it's just as internally consistent as the engineer's technocentric or the economist's anthropocentric reasoning. None of the four has the facts wrong; they're weighing different things as important."
Capstone: a different case
Transfer test. A government proposes a new offshore wind farm. Write one sentence reacting to it from each worldview below.
Ecocentric
Anthropocentric
Technocentric
- Ecocentric: "Turbine foundations and cabling could disturb seabed ecosystems and migratory routes that have value in themselves, regardless of the emissions they help avoid."
- Anthropocentric: "As long as the site is regulated to protect fishing livelihoods and coastal communities, this is a reasonable trade-off for reducing long-term harm to people."
- Technocentric: "Modern turbine design and marine engineering can minimize ecological disruption, so the technology itself resolves most of the concerns."
Every key term from 1.1 Perspectives, in one place.
- Perspective
- How a situation is viewed and understood by an individual, based on personal and collective assumptions, values and beliefs.
- Argument
- Reasoning constructed to support or counter a held perspective, not the same thing as the perspective itself.
- Values
- Qualities or principles that people feel have worth and importance in life.
- Worldview
- A lens shared by a group of people through which they perceive, interpret and act within their environment.
- Environmental value system (EVS)
- A model showing the inputs that shape our perspectives and the outputs that result from them.
- Ecocentrism
- The natural world has pre-eminent importance and intrinsic value.
- Anthropocentrism
- Humankind is viewed as the central, most important element of existence; splits into a wide variety of views.
- Technocentrism
- Assumes all environmental issues can be resolved through technology.
The questions and markschemes below attempt to mimic IB wording, phrasing and expectations, but are not IB-written questions.
Quick check first: four short recall and calculation questions from the Belo Monte Dam case and the EVS survey data above.
Score: 0 / 4
Type your answer to each question, then compare it to the markscheme and tick off what you actually included: that's your real score, marked by you.
Written questions: 0 / 31 (self-marked against the markscheme)
Outline one environmental cost and one economic benefit of the Belo Monte Dam.
One environmental cost and one economic benefit, each explained in a full sentence, are worth one mark each. Two costs or two benefits only earn one mark total:
Environmental cost (1 max)
Economic benefit (1 max)
A purely social benefit, like "people get electricity," doesn't count unless linked to economic activity, industry, jobs, income or development. Displacement of Indigenous or local communities doesn't count as an environmental cost unless linked to environmental change affecting the river ecosystem or resource use.
Self-marked score: 0 / 2
Explain how differing values may create tension between stakeholders in the Belo Monte Dam case.
Tick each point you're confident your answer actually included. Full marks need at least two different stakeholder values or perspectives referenced:
"People disagree," on its own, without explaining the actual value difference, doesn't earn credit.
Self-marked score: 0 / 4
Describe the pattern in technocentric responses across the four age groups in the mock survey table from the Learn tab.
One mark for the correct general pattern, one mark for backing it with the actual data. Tick each point you're confident your answer actually included:
"Technocentrism changes with age," without stating the direction of change, doesn't earn full credit.
Self-marked score: 0 / 2
Distinguish between a perspective and an argument.
One mark for each side of the distinction:
Saying a perspective and an argument mean the same thing doesn't earn credit.
Self-marked score: 0 / 2
Distinguish between instrumental value and intrinsic value.
One mark for each side of the distinction:
Two examples without a clear stated difference doesn't earn credit.
Self-marked score: 0 / 2
Outline the differences between an ecocentric and a technocentric response to the environmental impacts of a hydroelectric dam.
Two max credited from each side. Tick each point you're confident your answer actually included:
Ecocentric response (2 max)
Technocentric response (2 max)
Full marks need both EVS categories addressed, not just one. "Ecocentric people like nature" or "technocentric people like technology," without applying it to the dam, doesn't earn credit.
Self-marked score: 0 / 4
Explain how granting legal personhood to a river may reflect both ecocentric and anthropocentric values.
Two max credited from each side. Full marks need both interpretations addressed:
Ecocentric interpretation (2 max)
Anthropocentric interpretation (2 max)
"It gives the river rights," on its own, without explaining the ethical value behind it, doesn't earn full credit.
Self-marked score: 0 / 4
Distinguish between consequentialist and rights-based ethical approaches to an environmental decision.
One mark for each side of the distinction:
Two examples without identifying the actual ethical difference doesn't earn credit.
Self-marked score: 0 / 2
Explain how a rights-based ethical approach could be used to oppose the Belo Monte Dam.
Tick each point you're confident your answer actually included, up to 3:
"The dam is unfair," on its own, without identifying whose rights are affected, doesn't earn credit.
Self-marked score: 0 / 3
Discuss the extent to which granting legal personhood to natural entities reflects a shift toward more ecocentric environmental values.
Arguments for and against are capped at four each. A clear, balanced concluding judgment is worth one more mark on top of that. Tick each point you're confident your answer actually included:
Reflects a shift toward ecocentrism (4 max)
May not fully reflect ecocentrism (4 max)
Conclusion (1 max)
The conclusion mark isn't earned unless both sides have actually been considered first.
Self-marked score: 0 / 6
One extended-response essay, marked separately: holistic essay marking doesn't work as a checklist, so this one is self-assessed against markbands instead, not added to the written-questions total above.
To what extent is classifying environmental perspectives into ecocentric, anthropocentric and technocentric categories useful for understanding environmental decision-making?
Essays like this are marked holistically against markbands, not ticked off point by point. Use the sections below to check your coverage, then rate your own answer against the bands.
Answers may demonstrate
- understanding of concepts and terminology such as perspective, argument, values, worldview, environmental value system, ecocentrism, anthropocentrism, technocentrism, intrinsic value, instrumental value, moral standing, sustainability, environmental decision-making, stakeholder conflict, legal personhood, technological solutions, environmental management and ecosystem integrity;
- breadth in addressing and linking a range of ways EVS categories may help explain environmental decisions, such as dam construction, conservation strategies, renewable energy, resource management, pollution control, environmental law, rights of nature, Indigenous perspectives, economic development and technological innovation;
- examples of ecocentric perspectives, such as opposition to ecosystem destruction, support for river protection or legal personhood, recognition of intrinsic value, conservation, habitat restoration, reduced consumption or protection of biodiversity;
- examples of anthropocentric perspectives, such as support for sustainable resource management, environmental legislation, economic development balanced with environmental protection, protection of ecosystem services, public health, jobs, livelihoods and human welfare;
- examples of technocentric perspectives, such as support for hydropower, renewable energy technology, engineering solutions, carbon capture, pollution-control technologies, geoengineering, scientific management or technological innovation;
- balanced analysis of why classification is useful, such as helping explain stakeholder disagreement, predict preferred solutions, compare values, structure environmental debates and show why people may interpret the same evidence differently;
- balanced analysis of limitations, such as the categories being simplified, overlapping, context-dependent, culturally variable and unable to fully represent complex or changing individual perspectives;
- evaluation of the idea that individuals or groups may combine aspects of more than one EVS, such as supporting renewable energy for technological reasons while also supporting conservation for ecocentric reasons;
- a conclusion that is consistent with, and supported by, the analysis and examples given, for example: EVS categories are useful as a simplified framework for understanding broad differences in environmental decision-making, but they should not be treated as fixed or exclusive because real perspectives are complex, mixed and may change with context.
Indicative content
- Classification may be useful because it helps explain why stakeholders disagree about the same environmental issue.
- In the Belo Monte Dam case, a technocentric stakeholder may focus on electricity generation, an anthropocentric stakeholder may focus on jobs and economic welfare, and an ecocentric stakeholder may focus on ecosystem damage.
- EVS categories help link values to decisions and actions.
- EVS categories can help students or policymakers predict which solutions different groups may prefer.
- Ecocentric approaches may favor conservation, reduced consumption, habitat restoration or legal rights for nature.
- Anthropocentric approaches may favor environmental management, sustainable development, regulation or balancing conservation with human welfare.
- Technocentric approaches may favor engineering, renewable energy, monitoring, modeling or technological fixes.
- Classification is useful for comparing arguments because stakeholders may use evidence differently depending on their values.
- However, the categories are simplified models.
- Individuals may hold mixed perspectives and may not fit neatly into one category.
- Perspectives can change over time due to education, media, environmental disasters, scientific discoveries, law, technology or social change.
- The same action can be justified by different EVS categories; for example, legal personhood for a river may be ecocentric if based on intrinsic value, but anthropocentric if justified by water security.
- Technocentric, anthropocentric and ecocentric approaches may overlap in environmental decision-making.
- Classification may ignore power, politics, economic inequality, Indigenous rights, cultural identity or local context.
Markbands
The response shows limited understanding of EVS categories or environmental decision-making. The answer may list the three categories without clearly explaining how they are useful. Examples may be absent, vague or inaccurate. The response may be one-sided, with little or no consideration of limitations. There is little or no supported judgment on "to what extent."
The response shows sound understanding of ecocentric, anthropocentric and technocentric perspectives. There is some explanation of how the categories help understand environmental decisions or stakeholder disagreement. At least one relevant example is used. There is some consideration of limitations, such as overlap between categories or oversimplification. The response includes some judgment, although it may be uneven or only partly supported.
The response gives a balanced and well-developed evaluation of the usefulness of EVS classification. It clearly explains how the categories help interpret values, arguments, decisions and stakeholder conflict. It uses relevant examples effectively, such as dam construction, legal personhood, conservation or technological solutions. It evaluates limitations, including oversimplification, mixed perspectives, context dependence and change over time. It recognizes that categories are useful models but not fixed or exclusive descriptions of real individuals. There is a clear and supported conclusion that directly answers "to what extent."
Self-assessed band: not yet rated
Where 1.1 connects to the HL lenses
1.1.8 and 1.1.9 explicitly link to two HL lenses: HL.a Environmental law and HL.c Environmental ethics. This tab covers only that connection: the full Law and Ethics lenses will get their own dedicated pages later in this series.
Three ethical approaches
The way someone believes humans relate to nature shapes which ethical framework they reach for when justifying an environmental decision. (Notice this maps onto the dam scenario too: see if you can place the engineer, economist, conservationist and Indigenous community representative into these three.)
Virtue ethics
Focuses on the character of the person acting: good people do good actions. Respect, compassion and responsibility are seen as virtuous approaches to nature.
Consequentialist
Judges an action by its outcomes. Good consequences make an action good, regardless of intention. Utilitarianism is the best-known example.
Rights-based (deontological)
Judges an action by whether it conflicts with the rights of others, human or non-human. There is ongoing debate about what those rights are.
Instrumental value (the usefulness an entity has for humans: food, water, decomposing waste, inspiration) vs. intrinsic value (value attached to something simply for what it is). These are not exclusive: a whale can have both aesthetic/intrinsic value and instrumental value as a tourist attraction.
An entity has moral standing if it should be taken into account, morally, in how we act. Ecocentrists argue all living things have moral standing because they have intrinsic value; some extend this to non-living entities too (rivers, landscapes), as in Aldo Leopold's land ethic: "a thing is right when it tends to preserve the integrity, stability and beauty of the biotic community."
Where law meets perspective: legal personhood
An increasing number of laws grant legal personhood to natural entities (such as rivers) to strengthen environmental protection, similar to how corporations already hold legal personhood. This legal trend links directly back to 1.1: it draws on environmental value systems (both anthropocentric and ecocentric) and on rights-based (deontological) ethics.
This is also why the sorter scenario earlier (a river granted legal personhood) was tagged ecocentric at SL. At HL, you'd add that the same example can be argued either way, depending on whether the underlying motive is the river's intrinsic value (ecocentric) or the human benefits of stronger protection, such as water security (anthropocentric).
HL practice question
Discuss the extent to which granting legal personhood to natural entities reflects a shift toward more ecocentric environmental values.
Supports a shift toward ecocentrism (max 3):
- recognizes the intrinsic value/moral standing of a natural entity independent of its usefulness to humans, consistent with rights-based (deontological) ethical reasoning;
- aligns with Indigenous knowledge systems that do not separate humans from nature;
- extends to nature a legal status previously reserved mainly for humans and corporations, allowing the entity to be defended in court in its own right;
Limits the shift / anthropocentric reading (max 3):
- humans still design, interpret and enforce the law on the entity's behalf, so the change may be a legal strategy rather than a real shift in underlying values;
- stronger protection can equally be justified by human interests, such as water security or tourism revenue, which is an anthropocentric motive;
- enforcement and success vary by country and legal system, so the symbolic shift in values may not translate into consistent real-world protection;
A conclusion is optional here, not a separate marking point: e.g. legal personhood is best read as a partial shift, motivated by a mix of ecocentric and anthropocentric reasoning. It isn't required and doesn't add extra marks on top of the 3 + 3 above, but it's still good exam practice to include one.