Population ageing has recently boosted an extensive debate about how to measure individual aging. The chronological age, even if conventionally used, is somehow limited because it does not capture people’s own representation of aging, that is, how old people actually feel they are. In their study on the United States, Valeria Bordone and Bruno Arpino test the association between subjective age, as an alternative measure to chronological age, and two important social roles for older adults: having grandchildren and providing grandchild care.