社会年龄（social age）是年龄当量的一种。某年龄个体达到的社会化发展水平，即以社会行为成熟程度代表的年龄。仿效智力年龄提出。
长远影响：社会年龄越大，也许更加无意识的鼓励通货紧缩-至少日本温和人群盛行。
There is a further effect: the more that society ages, the more it may unconsciously encourage deflation-at least the gentle sort prevalent in Japan.
市场研究人员常常按年龄和社会阶层划分人口。
Market researchers often segment the population on the basis of age and social class.
即使年龄不足65岁，盲人和残疾人也有资格获得附加社会保障收入。
Blind and disabled people are eligible for SSI even under age 65.
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