Sanderson, Warren C.; Scherbov, Sergei - In: Demographic Research 16 (2007) 2, pp. 27-58
In Sanderson and Scherbov (2005) we introduced a new forward-looking definition of 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 … aging. Age is a measure of how many years a person has already lived. In contrast, our new approach to measuring age is …