Glossary for Navigating the Life-Course with Demography

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A person 13 to 18 years of age


Ageing of the population involves a consideration of the proportion of the population aged 65 and over, and the way this proportion is continuing to increase relative to younger age groups. This ageing process is mostly due to the historical decline in fertility and increasing life span due to declining age specific mortality rates at older ages.

Age Specific

This means that the given rate is expressed in terms of experience within each age group.  For example, age-specific fertility rates are usually expressed in terms of the experience of women within each of the five-year age groups; 15-19, 20-24, 25-29 years, etc. or they can also be expressed in terms of single age rates.


Anthropocene is the proposed current geological age, viewed as the period during which human activity has been the dominant influence on climate and the environment. The Working Group on the Anthropocene (WGA) voted to formally designate the epoch Anthropocene and presented the recommendation to the International Geological Congress on 29 August 2016.

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