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 …

of their actual health), and procrastination tendencies, which are especially likely with tasks that are aversive (e …-perceptions of one's health condition and procrastination. …

While demographers Lotka (1939) and Lopez (1961) proposed conditions on (exogenous) fertility and mortality laws under … issues of age structure stabilization and convergence, by considering a population whose fertility and mortality are … structures will end up with the same long-run age structure when fertility and mortality laws are converging, which requires …

egalitarian grounds --although the conclusion is reversed when mortality strikes only after retirement. …

prosperity and good health, it is however often regarded as a source of problems for policy-makers. The goal of this paper is to … raised for the design of the social security system, pension policies, preventive health policies, the provision of long term …