fonction de bien-être social

OBS: [...] à la suite d'un changement économique [...] fonction [qui] est censée indiquer dans quel sens le bien-être collectif varie quand ceux des individus se modifient éventuellement en des sens opposés [...]

OBS: ... a ranking of preferences by society as a whole between alternative possibilities, e.g. between a situation in which wealth or income are distributed more equally or less equally by inheritance, effort, chance, monopoly, taxation.
OBS: Many of the programs have redistributive effects benefiting some persons at the expense of others, and cost-benefit analysis makes no contribution toward the establishment of the social welfare function that provides society's answer about the relative desirability of various patterns of income distribution.