Measuring social welfare and sustainability

Abstract

Samuelson (1961) suggested that the best measure of social welfare would be a ‘wealth-like’ magnitude. This paper explains the approach to wealth measurement presented in Where is the Wealth of Nations? (World Bank 2006). We show how deriving a ‘top-down’ estimate of total wealth and ‘bottom-up’ estimates of produced and natural capital can reveal the importance of natural assets as a source of social welfare in low income countries. By measuring the real change in asset values (‘genuine’ saving) we can determine whether social welfare is increasing or decreasing as a result of current policies. Negative genuine saving indicates that future wellbeing will decline – i.e. that the economy is on an unsustainable path. We discuss the extensions to the SNA inherent in this approach. 1 The opinions expressed are those of the authors and not necessarily those of the World Bank.