Generic relationships between heterogeneity in population frailty and flattening of aggregate population hazard functions at extreme ages are drawn from classical mathematical results on the limiting behavior of Laplace transforms. In particular, it shows that the population hazard function...

Biodemography has emerged and grown over the last fifteen years, with loyal and farsighted support from its patrons. As it enters what might be called its adolescence as a field, it faces challenges along with abounding opportunities. One challenge is to continue to generate knowledge that...

Demography, within the memories of those now living,has been shaped by a few outstanding centers,the Institut National d'Etudes Demographiques,the Cambridge Group for the History of Population and Social Structure, and the Princeton Office of Population Research. The Max Planck Institute for...