Chapter 12Institutional Economics
Introduction
The preceding chapters analyzed markets as if the rules governing them — property rights, contract enforcement, legal systems — were given. This chapter asks where those rules come from, why they matter, and how they determine economic outcomes. The central claim of institutional economics is bold: institutions are the primary determinant of long-run economic performance.
This is a chapter where theory meets history and empirics. We draw on transaction cost economics (Coase, Williamson), new institutional economics (North), and the empirical institutions-and-development literature (Acemoglu, Johnson, and Robinson). The econometric tools from Chapter 9 — particularly instrumental variables — play a starring role.
By the end of this chapter, you will be able to:
- Define institutions and explain their role in economic performance
- Apply Coase's theory of the firm and Williamson's governance framework
- Describe North's framework of formal rules, informal constraints, and enforcement
- Interpret Acemoglu, Johnson, and Robinson's IV strategy for estimating the effect of institutions
- Distinguish extractive from inclusive institutions and their growth implications
Prerequisites: Chapters 4 (Coase theorem) and 9 (instrumental variables, DiD).
Named literature: Coase (1937, 1960); Williamson (1975, 1985); North (1990); Acemoglu, Johnson & Robinson (2001, 2005); Acemoglu & Robinson (2012); Demsetz (1967); Alchian & Demsetz (1972).
12.1 Transaction Cost Economics
Coase's Theory of the Firm
In Chapter 4, we encountered Coase's theorem about externalities. But Coase's earlier contribution (1937) asked an equally fundamental question: why do firms exist?
If markets are efficient, why don't all transactions occur between independent agents contracting in spot markets? Why do firms coordinate production internally rather than buying every input on the open market?
Transaction costs. The costs of using the market mechanism: search costs (finding trading partners), bargaining costs (negotiating terms), and enforcement costs (ensuring compliance). When transaction costs exceed the costs of internal organization, firms bring transactions in-house.
Make-or-buy decision. The firm's choice between producing an input internally (make) or purchasing it from an external supplier (buy). The optimal choice depends on the tradeoff between transaction costs of market exchange and the bureaucratic costs of internal organization.
Coase's answer: transaction costs. Using the market is not free. There are costs of:
- Search costs: Finding trading partners who have what you need at a price you can afford.
- Bargaining costs: Negotiating terms — price, delivery schedule, quality specifications, liability for defects.
- Enforcement costs: Ensuring compliance with the agreement.
$$TC = \text{Search costs} + \text{Bargaining costs} + \text{Enforcement costs}$$
(Eq. 12.1)
When transaction costs are low — standardized products, many potential partners, easy-to-verify quality, strong legal enforcement — the market works well. When transaction costs are high — customized products, few potential partners, hard-to-verify quality, weak legal systems — firms internalize the transaction: they "make" rather than "buy."
The boundary of the firm is determined by the tradeoff between the cost of using the market (transaction costs) and the cost of internal coordination (bureaucracy, monitoring, loss of specialization). The firm expands until the marginal cost of organizing one more transaction internally equals the marginal cost of conducting it through the market.
Williamson's Governance Framework
Oliver Williamson (1975, 1985) formalized Coase's insight. The key variable is asset specificity — the degree to which an investment is tailored to a specific transaction and loses value in alternative uses.
Asset specificity. An asset is specific if it is significantly more valuable in its current use or relationship than in its next-best alternative. Types: physical (a custom die), human (specialized knowledge), site (a plant located next to a specific supplier), dedicated (capacity built for a specific customer).
Hold-up problem. After a relationship-specific investment is made, the other party can exploit the investor's lack of outside options by renegotiating terms. The threat of hold-up discourages efficient investment and is a primary reason for vertical integration.
Governance structure. The institutional arrangement governing a transaction: market (spot contracts for generic goods), hybrid (long-term contracts, joint ventures for intermediate specificity), or hierarchy (vertical integration for highly specific assets). The optimal governance form minimizes the sum of production and transaction costs.
High asset specificity creates a hold-up problem: once the investment is made, the other party can renegotiate terms, capturing some of the investor's quasi-rents.
| Asset Specificity | Frequency | Governance |
|---|
| Low | Any | Market (spot contracts) |
| Medium | Recurring | Hybrid (long-term contracts, joint ventures) |
| High | Recurring | Hierarchy (vertical integration) |
Example 12.1 — Make or Buy?
A car manufacturer needs a specific engine component. If the component is standardized (low asset specificity): buy on the market. Many suppliers compete; no hold-up risk.
If the component requires custom tooling costing \$10 million with no alternative use (high asset specificity): the supplier, having invested \$10M, is vulnerable to the manufacturer demanding a price cut. Solution: vertical integration — the manufacturer produces the component internally, eliminating the hold-up problem.
$$\text{Choose} \begin{cases} \text{Market} & \text{if } TC_{\text{market}} < TC_{\text{hierarchy}} \\ \text{Hierarchy} & \text{otherwise} \end{cases}$$
(Eq. 12.2a)
12.2 New Institutional Economics: North's Framework
Douglass North (1990) defined institutions as "the rules of the game in a society" — the humanly devised constraints that shape human interaction.
Institutions consist of: (1) Formal rules: constitutions, laws, property rights, regulations; (2) Informal constraints: customs, traditions, codes of conduct, social norms; (3) Enforcement mechanisms: courts, police, social sanctions, reputation.
Formal institutions (rules). Explicit, codified rules: constitutions, statutes, property rights laws, regulations, contracts. Formal rules can change rapidly through legislation or revolution, but their effectiveness depends on enforcement and compatibility with informal norms.
Informal institutions (constraints). Unwritten rules of behavior: customs, traditions, taboos, codes of conduct, social norms, and conventions. Informal constraints evolve slowly over generations and often persist long after formal rules change, creating an "implementation gap."
Enforcement mechanism. The means by which institutional rules are made binding: courts and legal systems (formal), social sanctions and reputation (informal), police and regulatory agencies (formal). Without credible enforcement, even well-designed rules are mere paper.
Path dependence. The tendency for historical events and early institutional choices to constrain future development. Once an institutional path is established, self-reinforcing mechanisms (increasing returns to adoption, vested interests, cultural adaptation) make it costly to switch to an alternative path, even if the alternative would be more efficient.
$$\text{Economic performance} = f(\text{formal rules}, \text{informal constraints}, \text{enforcement})$$
(Eq. 12.2)
Key insights:
- Institutions reduce uncertainty. Without stable rules, every economic interaction is risky. Secure property rights and impartial courts allow long-term planning and investment.
- Transaction costs depend on the institutional framework. Good institutions lower transaction costs, enabling more complex and productive exchange. This connects North directly to Coase.
- Path dependence. Formal rules can change overnight, but informal constraints change slowly — cultural norms, social trust, expectations take generations to evolve. This explains why importing institutions often fails.
Examples: Russia adopted Western-style market institutions in the 1990s ("shock therapy"), but without informal norms of contract respect and trust, the result was crony capitalism. Botswana adopted inclusive institutions at independence (1966) and they worked — partly because existing Tswana traditions of consultation (the kgotla system) were compatible with democratic governance.
12.3 Institutions and Development: The AJR Framework
The Endogeneity Problem
Rich countries have good institutions. But is this because good institutions cause growth, or because growth creates wealth needed to build good institutions? This is an identification problem (Chapter 9). OLS regression of GDP on institutional quality is biased by reverse causality and omitted variables.
Acemoglu, Johnson, and Robinson (2001)
Settler mortality instrument. AJR's key innovation: using historical settler mortality rates as an instrument for current institutional quality. Where Europeans could settle safely, they built inclusive institutions; where mortality was high, they built extractive institutions for resource extraction. The persistence of these institutions (path dependence) provides the link to current outcomes.
Exclusion restriction (AJR context). The assumption that settler mortality affects current GDP per capita only through its effect on institutions, not through any direct channel. Threats: mortality may correlate with disease environment (affecting current health/productivity directly), geography, or climate. AJR argue these channels are controlled for or quantitatively small.
Instrumental variables (IV) in institutional analysis. The method of using an exogenous source of variation (here, settler mortality) to identify the causal effect of an endogenous variable (institutional quality) on the outcome (GDP per capita). IV addresses the reverse causality problem: rich countries may build good institutions, rather than good institutions making countries rich.
Two-stage least squares (2SLS) in AJR. First stage: regress institutional quality on settler mortality (and controls) to get predicted "exogenous" institutional quality. Second stage: regress GDP per capita on predicted institutional quality. The 2SLS estimate isolates the causal effect of institutions by using only the variation in institutions driven by settler mortality.
AJR proposed a landmark instrumental variable strategy.
Instrument: Log settler mortality in colonial territories. Where mortality was low, Europeans settled and built inclusive institutions. Where mortality was high, they set up extractive institutions. These differences persisted (path dependence). Settler mortality affects current GDP only through its effect on institutions (exclusion restriction).
$$\text{1st stage: } \text{Institutions}_i = \alpha + \beta \cdot \ln(\text{settler mortality}_i) + \varepsilon_i$$
(Eq. 12.4)
$$\text{2nd stage: } \ln(\text{GDP/cap}_i) = \gamma + \delta \cdot \widehat{\text{Institutions}}_i + \eta_i$$
(Eq. 12.5)
$$\text{Exclusion restriction: settler mortality} \to \text{institutions} \to \text{GDP (only path)}$$
(Eq. 12.6)
2SLS estimates: First stage: log settler mortality strongly predicts institutional quality (F-statistic well above 10). Second stage: a one-standard-deviation improvement in institutions is associated with roughly 2x higher GDP per capita. The IV estimate is larger than OLS — suggesting measurement error attenuates the OLS coefficient.
Example 12.2 — Australia vs. Congo
Australia (low settler mortality, ~8 per 1,000/year) developed inclusive institutions — strong property rights, democratic governance, independent judiciary. GDP per capita ~\$15,000.
Congo (high settler mortality, ~240 per 1,000/year) received extractive institutions — mineral extraction, forced labor, minimal public goods provision. GDP per capita ~\$150. The 100x income gap is not explained by geography alone. AJR's IV estimate attributes a large share to institutional differences.
12.4 Extractive vs. Inclusive Institutions
Acemoglu and Robinson (2012), Why Nations Fail, built a broader theory:
Extractive institutions. Political and economic institutions designed to extract resources from the many for the benefit of the few. Features: concentrated political power, insecure property rights, barriers to entry, limited public goods, suppression of creative destruction.
Inclusive institutions. Political and economic institutions that spread power broadly and create incentives for broad-based investment and innovation. Features: pluralistic politics, secure property rights, competitive markets, broad public goods provision, creative destruction tolerated.
| Dimension | Extractive | Inclusive |
|---|
| Property rights | Insecure; expropriation risk | Secure; enforced by independent courts |
| Entry barriers | High (licenses, monopolies) | Low (competitive markets) |
| Public goods | Minimal | Broad provision |
| Political power | Concentrated (elite capture) | Pluralistic (checks and balances) |
| Growth pattern | Possible but unsustainable | Sustained (rewards innovation) |
The critical insight: growth under extractive institutions is possible (Soviet Union, China under early reforms) but ultimately unsustainable because creative destruction threatens the elite's power.
Example 12.3 — North Korea vs. South Korea
North and South Korea share geography, culture, language, and pre-1945 history. The divergence is purely institutional:
South Korea (inclusive): Transitioned to democracy (1987), secure property rights, competitive markets, investment in education and technology. GDP per capita ~\$15,000 (2024).
North Korea (extractive): Centralized political power, no property rights, command economy, suppression of markets and information. GDP per capita ~\$1,800 (estimated).
This is the closest to a natural experiment in institutional economics: same geography, same culture, same starting point — radically different institutions produce a ~20x income gap. North's framework explains the persistence: the Kim regime cannot allow inclusive institutions because they would threaten its power. Path dependence locks in the extractive equilibrium.
12.5 Property Rights
Property rights. Legally and socially recognized rights to use, derive income from, transfer, and exclude others from an asset. Secure property rights are a necessary condition for investment (the investor must capture returns) and for efficient market exchange (you can only trade what you own).
Coase theorem (restated). In the absence of transaction costs, the initial allocation of property rights does not affect the efficiency of the final outcome — parties will bargain to the efficient allocation regardless of who holds the rights. At the graduate level, the emphasis shifts to the realistic case: when transaction costs are positive, the initial assignment of property rights does matter, and institutions that minimize transaction costs improve efficiency.
Residual claimant. The party who receives the income remaining after all contractual payments have been made. Alchian and Demsetz (1972) argued that making the monitor the residual claimant solves the team production problem: the monitor has the incentive to maximize total output because they keep whatever is left over.
Demsetz (1967) argued that property rights emerge when the benefits of internalization exceed the costs. Secure property rights encourage investment (the investor captures returns), enable markets (you can only trade what you own), reduce conflict, and lower transaction costs (per the Coase theorem in Chapter 4).
12.6 Political Economy
Endogenous institutions. Institutions are not exogenous constraints but are themselves shaped by economic and political forces. Those in power design rules to benefit themselves (extractive institutions persist because elites block reform). Understanding institutional change requires asking: who designs the rules, and why?
The fundamental puzzle of development: If inclusive institutions produce better outcomes, why don't all countries adopt them?
Inclusive institutions threaten existing elites through: (1) redistribution of political power, (2) creative destruction that displaces incumbents, (3) commitment problems — rulers cannot credibly promise not to reverse reforms, and (4) collective action failure — concentrated losers organize more effectively than diffuse beneficiaries.
Institutional change is typically triggered by crises — wars, revolutions, pandemics — that disrupt existing power structures. Gradual, peaceful reform is the exception.
12.7 Thread Example: The Kaelani Republic
The Kaelani Republic — Institutional Path Dependence
Kaelani's colonial history provides a case study in institutional path dependence. The 1992 reform introduced formal rule changes (property rights law, independent central bank, anti-corruption commission), but informal constraints (patronage networks) persisted. GDP per capita rose from \$1,500 to \$1,000 over two decades — concentrated in sectors where formal rules mattered most (banking, telecommunications) and lagging where informal norms dominated (agriculture, mining).
This pattern — rapid formal change, slow informal adaptation — is exactly what North's framework predicts.
Kaelani Republic: Institutional Reform Timeline
Click any event to expand details. Blue events represent formal rule changes; red represents informal norm evolution. Notice the gap — formal rules change quickly, but informal adaptation lags by years or decades.
The Formal-Informal Gap: Formal rules changed in 1992. Informal norms began shifting around 2005 — a gap of ~13 years. North predicts this lag.
The Historical Lens
From Coase to North to AJR: The Evolution of Institutional Economics.
Coase (1937): "The Nature of the Firm" asked the fundamental question: why do firms exist? His answer — transaction costs — launched a research program that would eventually earn him the Nobel Prize (1991). Coase showed that the boundaries between market and hierarchy are determined by the relative costs of each organizational form.
Williamson (1975, 1985): Built on Coase by formalizing transaction cost economics as a field. His key contribution was identifying asset specificity as the critical variable determining governance choice. When investments are relationship-specific, hold-up problems drive firms toward vertical integration. Nobel Prize 2009.
North (1990): Institutions, Institutional Change and Economic Performance expanded the lens from firm boundaries to entire economies. North defined institutions as "the rules of the game" and distinguished formal rules (which can change overnight) from informal constraints (which evolve over generations). This framework explained why transplanting institutions across cultures often fails. Nobel Prize 1993.
AJR (2001): "The Colonial Origins of Comparative Development" brought the empirical revolution to institutional economics. Using settler mortality as an instrument for institutional quality, Acemoglu, Johnson, and Robinson provided the first credible causal evidence that institutions — not geography, not culture — are the primary determinant of cross-country income differences. The paper combined North's theoretical framework with the econometric tools of Chapter 9 (instrumental variables), demonstrating that the 20x income gap between rich and poor countries is largely an institutional gap. Acemoglu received the Nobel Prize in 2024, alongside Johnson and Robinson.
The progression from Coase to North to AJR represents institutional economics maturing from conceptual insight (why firms exist) to theoretical framework (rules of the game) to empirical identification (causal evidence). Each step built on the last, and together they transformed our understanding of why some countries are rich and others poor.
Summary
- Transaction cost economics (Coase, Williamson): Firms exist because market transactions are costly. The governance choice between market, hybrid, and hierarchy depends on asset specificity.
- North's framework: Institutions are the rules of the game — formal rules, informal constraints, and enforcement. Institutional change is path-dependent.
- Acemoglu, Johnson, and Robinson: Using settler mortality as an IV for institutional quality, they estimate that institutions are the primary determinant of cross-country income differences.
- Extractive vs. inclusive institutions: Extractive institutions concentrate power and resist creative destruction. Growth under extractive institutions is possible but unsustainable.
- Property rights (Demsetz): Emerge when the benefits of internalization exceed the costs.
- Political economy: Institutions reflect power relations. Elites under extractive institutions resist reform.
Key Equations
| Label | Equation | Description |
|---|
| Eq. 12.1 | $TC = \text{Search} + \text{Bargaining} + \text{Enforcement}$ | Transaction costs |
| Eq. 12.2 | Performance $= f$(formal rules, informal constraints, enforcement) | North's framework |
Practice
- A tech company needs a custom AI chip. Option A: contract with an external foundry (\$10M in custom tooling). Option B: build an in-house fab (\$10M). Using Williamson's framework, analyze the tradeoff. Under what conditions does vertical integration make sense despite higher upfront cost?
- Classify the following as formal rules, informal constraints, or enforcement mechanisms: (a) the U.S. Constitution, (b) a handshake agreement, (c) SEC enforcement of securities law, (d) the social norm against cutting in line, (e) international trade agreements.
- Interpret Acemoglu's 2SLS results: first-stage F-statistic is 22, second-stage coefficient on institutional quality is 0.94 (log GDP per capita on a 0-10 institution index). (a) Is the instrument strong? (b) What does the coefficient mean economically? (c) What is the exclusion restriction?
Apply
- Singapore has colonial history (British) and is tropical (high disease environment). Yet it has strong institutions and high GDP per capita. Does this contradict AJR? What factors might explain the deviation?
- China has achieved rapid growth under what many classify as extractive political institutions. Using the Acemoglu-Robinson framework, assess: (a) what features have supported growth, (b) what may limit future growth, (c) whether China's trajectory supports or challenges the theory.
- Many post-Soviet countries adopted Western-style constitutions in the 1990s. Some (Poland, Estonia) thrived; others stagnated. Using North's framework, explain why identical formal rules produced different outcomes.
Challenge
- Construct a formal model of the hold-up problem. Two firms invest $I$ each in relationship-specific assets. If both invest, joint surplus is $V > 2I$. After investment, 50/50 Nash bargaining. Show that if $V/2 < I$, neither invests despite social efficiency ($V > 2I$). What governance mechanism solves this?
- AJR's instrument (settler mortality) has been criticized. Discuss three threats to identification and evaluate how damaging each is. For one threat, propose an empirical test.
- Design an empirical strategy (using Chapter 9 tools) to test North's claim that informal constraints change more slowly than formal rules. What measures would you use? What data would you need?