science

Porter hypothesis

Porter hypothesis is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Porter hypothesis rather than just read about it. In short: According to the Porter hypothesis, strict environmental regulations can induce efficiency and encourage innovations that help improve commercial competitiveness. The hypothesis was formulated by the Harvard University economist Michael Porter in an article in 1991.

Key takeaways

Porter hypothesis belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Porter hypothesis to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Porter hypothesis from memory before moving on to harder problems.

Reference excerpt

According to the Porter hypothesis, strict environmental regulations can induce efficiency and encourage innovations that help improve commercial competitiveness. The hypothesis was formulated by the Harvard University economist Michael Porter in an article in 1991. Porter and Claas van der Linde, of the University of St. Gallen, detailed the hypothesis in the 1995 journal article "Toward a New Conception of the Environment-Competitiveness Relationship." The hypothesis suggests that strict environmental regulation triggers the discovery and introduction of cleaner technologies and environmental improvements, the innovation effect, making production processes and products more efficient. The cost savings that can be achieved are sufficient to overcompensate for both the compliance costs directly attributed to new regulations and the innovation costs. In the first-mover advantage, a company is able to exploit innovation by learning curve effects or patenting and attains a dominating competitive position compared to companies in countries where environmental regulations were enforced much later. Various studies found that stricter environmental regulation stimulates innovation, the "weak" version of Porter hypothesis.

Mixed evidence There is mixed evidence whether stricter regulation enhances business performance, the "strong" version of Porter hypothesis. Whether the type of regulation - market-based approaches or requirements and prohibitions – has an impact, is an open question. Economic theory suggests that market based instruments could be more efficient but there is mixed empirical evidence. A study of OECD countries, however, showed no evidence of permanent effects of environmental policy tightening on productivity following the introduction of environmental measures, regardless of the type of regulation.

Application The Porter hypothesis has been applied to REACH. In one conclusion, companies that adopt a cost leadership business strategy and have a relatively small product portfolio will fare better than companies that compete by product differentiation and have a larger number of chemicals that require regulation.

See also Competitive advantage Deindustrialization Externality Eco-tariff Regulatory economics

References

Further reading Michael E. Porter and Claas van der Linde, "Toward a New Conception of the Environment-Competitiveness Relationship," Journal of Economic Perspectives, Vol. 9, No. 4 (Autumn, 1995), pp. 97–118 (JSTOR). Michael E. Porter and Claas van der Linde, "Green and Competitive" Harvard Business Review (Sept-October 1995), p 120–134.

Worked examples

Example 1 — a first encounter with Porter hypothesis

Start with the simplest possible case. Write down what Porter hypothesis claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Porter hypothesis before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Porter hypothesis ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Porter hypothesis

In research: Porter hypothesis appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Porter hypothesis in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Porter hypothesis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Competition (economics), Environmental economics, Environmental social science concepts, so understanding it makes those chapters shorter.
In everyday life: Look for Porter hypothesis outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Porter hypothesis in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Porter hypothesis means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Porter hypothesis out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Porter hypothesis in simple terms?

Why does Porter hypothesis matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Porter hypothesis?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Porter hypothesis.