Why your choices are shaped by invisible rules and social habits

Science · Published 20 October 2026 Swipe more like this →

In short: Most economic theories assume humans are perfectly rational actors making independent decisions. Institutional economics argues the opposite: our behavior is deeply embedded in formal laws, informal norms, and organizational structures. It suggests that markets aren't just natural occurrences, but complex results of human culture and evolving history.

Institutional economics emerged as a prominent school in the United States during the 1920s and 1930s. It challenged traditional static economic theories by arguing that people are not isolated decision-makers; instead, they are continually influenced by changing customs and institutions. A foundational figure, Thorstein Veblen, criticized the idea of humans as independent agents, suggesting that business enterprise is often driven by pecuniary motives—the amassing of money—rather than technological progress or the production of goods.

The field distinguishes itself by focusing on 'productive units' as organizations composed of people within societies. While classical economics might focus on abstract exchanges, institutionalists look at how property rights, transaction costs (such as negotiation and monitoring expenses), and governance frameworks shape market performance. John R. Commons was a key figure who emphasized collective action and the legal foundations of an economy, viewing economic operations as part of a system of continually evolving laws.

Modern iterations, such as New Institutional Economics, integrate game theory and contract analysis to explain how legal systems evolve and how exchange-enabling institutions emerge. This tradition highlights a co-evolution: economic structures shape social norms, and social norms simultaneously shape economic structures. Because it rejects the 'homo economicus' model of perfect rationality in favor of bounded rationality and learning, institutional economics remains a leading heterodox approach used to analyze everything from financial stability to the modernization of developing countries.

The core tension lies in whether institutions are merely products of human taste or if they actively shape those very tastes. Traditional institutionalists argue against reducing institutions to nature or technology alone, asserting that living within these structures shapes our worldviews and habits over time.

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