dependency ratio

a measure of the portion of a population that is composed of people who are not in the work force and depend on others for support versus people who are in the work force and are self-sufficient. The dependency ratio is often defined in terms of age groups, with those who either are too young to work or are retired being set against those who are in their prime earning years; it is then calculated as the number of individuals aged below 15 or above 64 divided by the number of individuals aged 15 to 64.

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Psychology term of the day

January 3rd 2025

ring chromosome 18

a congenital chromosomal disorder characterized by microcephaly, ear and eye abnormalities, and mild to severe cognitive impairment. The condition is not hereditary but due to breakage of the arms of chromosome 18, which fuse to form one or more rings of varying sizes.