Richard Stone
Citation: For having made fundamental contributions to the development of systems of national accounts and hence greatly improved the basis for empirical economic analysis.
The key idea
A unified, double-entry national-accounts system that integrates production, income, expenditure, and balance-sheet flows.
The explanation
Stone built the System of National Accounts (SNA), now used by every country in the world to compile GDP and related statistics. The SNA's double-entry structure ensures consistency: GDP equals total income equals total expenditure, by construction.
Why Africa should care
Every Kenyan, Nigerian, or South African GDP statistic is built on Stone's SNA framework. The persistent African challenge is informal-sector measurement: SNA conventions for imputing informal activity differ by country, making cross-country comparisons fragile. The Stone framework was designed for industrial economies; African statistical agencies are still adapting it for 70%-informal contexts.
How to use it
When using GDP to compare African economies, check whether the SNA 2008 revisions have been adopted (KNBS 2014 rebase, Ghana 2010 rebase, Nigeria 2014 rebase). Pre-rebase numbers can understate GDP by 20-89%.
Canonical works
- United Nations, IMF, OECD, World Bank, Eurostat (2009) "A System of National Accounts (SNA 2008)"
- Richard Stone (1954) "The Measurement of Consumers' Expenditure and Behaviour in the United Kingdom, 1920-1938" Cambridge University Press
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