exhibit a too high fertility rate. Furthemore, when health is introduced as another source of externalities, the model shows … that health expenditures have not always to be subsidized. Indeed, the taxation of births plays the role of an indirect … subsidy on health expenditures because it decreases the cost of health relatively to the cost of the quantity of children …

, separating episodes of crises from those of growth. Performance is measured by the output response following recessions, rather … than average rates of growth that aggregate periods of recessions and periods of growth. Results highlight significant … performance following the so-called "transitional recession" from that of "normal recessions", the analysis allows separating the …

under aggregation. …

We provide a general theorem on the aggregation of preferences under uncertainty. We study, in the Anscombe …-dependent versions of these models). We prove that aggregation is possible and necessarily linear if (society's) preferences are "smooth … possibility of aggregation of non-smooth preferences. …

The paper addresses the problem of extending aggregation operators typically defined on $[0,1]$ to the symmetric … interval $[-1,1]$, where the ``0'' value plays a particular role (neutral value). We distinguish the cases where aggregation … using an interpolation approach, supposing the value of the aggregation to be known for ternary vectors. …

that aggregation is possible and necessarily linear if and only if (society's) preferences are uncertainty neutral. The … number of ways to restore the possibility of aggregation are then discussed. …

for the consensus problems, in particular in the case of the aggregation of linear orders. First we consider the medians …