This paper addresses in a systematic demographic manner the widely discussed question: To what extent can immigration compensate for low fertility in Europe? We begin with a set of 28 alternative scenarios combining seven different fertility levels with four different migration assumptions at...

In Sanderson and Scherbov (2005) we introduced a new forwardlooking definition of age called “prospective age” and argued that its use, along with the traditional backward-looking concept of age, provides a more informative basis upon which to discuss population ageing. Age is a measure of...