[영문]Using three waves of data from the Health and Retirement Study, I examined the association of parental divorce and remarriage with the odds that biological, adult children give personal care and financial assistance to their frail parents. The analysis included 5,099 adult children in the mother sample and 4,029 children in the father sample. Results indicate that adult children of divorced parents are just as likely as adult children of widowed parents to give care and money to their mothers, but the former are less likely than the latter to care for their fathers. The findings suggest that divorced fathers are prone to be the population most in need of formal support in old age