Good governance requires a state that can actually do things — assess and collect taxes, enforce a judgment, deliver a vaccine to a remote district, run a clean payroll. This is state capacity, introduced in the Political Economy course and developed here into an operational diagnosis: what the components are, how we know they matter, and why so many attempts to build capacity fail in a characteristic way.
The three capacities, and their complementarity
- Fiscal capacity — the administrative reach to raise revenue: registries, withholding, audit, the ability to tax income and consumption and not just the border. Summarised crudely by the tax-to-GDP ratio.
- Legal capacity — the ability to enforce contracts and protect property and persons impartially: functioning courts, police, and registries.
- Collective (or delivery) capacity — the ability to provide public goods across the whole territory: build the road, staff the clinic, run the exam.
Why the capacities are complements
Besley and Persson's central result is that fiscal and legal capacity are complementary investments that tend to rise together: a state that can secure property and enforce contracts has an economy worth taxing, and a state that can tax has the revenue to fund courts and police. This is why capacity comes in clusters — the 'pillars of prosperity' stand or fall together — and why piecemeal capacity-building (a new tax IT system in a state with no legal capacity) underperforms. You cannot bolt one strong capacity onto an otherwise weak state and expect it to hold.
Weberian bureaucracy and growth
Does the way a bureaucracy is organised actually affect economic outcomes, or is it window-dressing? Peter Evans and James Rauch (1999) built a 'Weberianness' scale measuring how closely a country's core economic agencies approximate Weber's ideal type — meritocratic recruitment (entry by examination and credentials, not patronage) and predictable, rewarding career ladders that give officials a long-term stake in the institution. Across developing countries, higher Weberianness was associated with significantly higher economic growth, controlling for human capital and initial income.
Evans-Rauch: meritocracy and careers matter
The two features that did the work were meritocratic recruitment and predictable career rewards. Meritocratic entry selects competent officials and signals that the bureaucracy is a professional body, not a spoils system; predictable careers give officials a reason to invest in the institution's long-run performance rather than extract from it today. Together they create 'embedded autonomy' (Evans) — a bureaucracy connected enough to society to be useful but autonomous enough not to be captured. This is the micro-foundation of the developmental state from the Development course.
Why capacity-building fails: the capability trap
If we know capacity matters, why do decades of capacity-building programmes leave many states as weak as they found them? Pritchett, Woolcock, and Andrews (2013) named the pattern the capability trap, driven by isomorphic mimicry.
Isomorphic mimicry and premature load-bearing
Isomorphic mimicry: states adopt the forms of capable states — the organisation charts, the laws, the audit manuals, the strategic plans — to gain legitimacy and donor approval, without acquiring the underlying function. The agency looks like a modern revenue authority but cannot collect; the procurement law mirrors the OECD template but procurement still leaks. Premature load-bearing then finishes the job: reforms pile demanding new responsibilities onto a state that cannot yet bear them, it visibly fails, confidence collapses, and the system retreats — trapped at low capability while accumulating impressive-looking but empty forms. The form is mistaken for the function, and importing the form does not import the function.
The constructive response: PDIA
The same authors propose Problem-Driven Iterative Adaptation (PDIA) as the alternative to copying forms: start from a specific, locally-nominated problem (not a best-practice template); pursue solutions through iterative trial-and-error with rapid feedback; create authorising environments that permit experimentation; and build real function before scaling form. The philosophy connects to the Impact Evaluation course (learn what works by trying and measuring) and to Grindle's selectivity (solve binding problems, don't import checklists). Capacity is grown locally through solving real problems, not installed from abroad.
Exercise
A donor funds a low-capacity country to create a new, independent procurement authority, modelled closely on a highly-rated European agency, complete with the same statute, organogram, and e-procurement system. Three years on, procurement still leaks and the authority is widely seen as ineffective. (1) Diagnose the failure using isomorphic mimicry and premature load-bearing. (2) Use the complementarity of capacities to explain why the e-procurement system in particular underperformed. (3) Evans-Rauch suggests a personnel dimension the reform likely neglected — what is it and why does it matter? (4) Sketch how a PDIA approach would have tackled procurement leakage differently.