James Buchanan
Citation: For his development of the contractual and constitutional bases for the theory of economic and political decision-making.
The key idea
Public choice theory. Apply rational-agent analysis to politicians, bureaucrats, and voters. Government failure can be as serious as market failure.
The explanation
Buchanan and Tullock's Calculus of Consent (1962) modelled government decisions as outcomes of rational self-interested behaviour by politicians, bureaucrats, and voters. Rent-seeking, log-rolling, the median-voter theorem, fiscal illusion, time-inconsistency in policy — all flow from this framework.
Why Africa should care
Public-choice theory explains African political-economy outcomes with painful precision: rent-seeking around licensing (Kenya's matatu permits, Nigerian fuel subsidies), patronage in cabinet appointments, fiscal illusion in budget speeches that double-count revenue. The Hustler Fund's rapid expansion before elections is a textbook public-choice prediction.
How to use it
When evaluating a public policy, model the politicians and bureaucrats implementing it as rational self-interested agents. Ask: what incentives does this policy create for those agents, and how will it warp the intended outcome?
Canonical works
- James M. Buchanan and Gordon Tullock (1962) "The Calculus of Consent: Logical Foundations of Constitutional Democracy" University of Michigan Press
- James M. Buchanan (1967) "Public Finance in Democratic Process" University of North Carolina Press
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