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α: calibrated so average coauthorship-adjusted count equals average raw count
Whereas life expectancy continues to increase in most industrialized countries, many developing and transition countries are today confronted with decreases in life expectancy. Usual measures employed to compare welfare over time and space fail to deal with such demographic change and may lead to the so-called 'repugnant conclusion' that lower life expectancy involves higher welfare per capita. We illustrate this type of transmission channel using various welfare criteria and reference populations. We also consider feed-back effects from the demography on the economy using a neo-classical growth model. We show that the 'repugnant conclusion' can be avoided if we choose a lifetime welfare measure instead of a period (or snapshot) welfare measure. All concepts are illustrated empirically using a small sample of developed and developing countries. Copyright 2008 , Oxford University Press.