Life Expectancy and Old Age Savings
利用AHEAD数据发现，不同收入、性别和健康状况的老年人预期寿命差异巨大，这可能导致储蓄行为显著不同；高收入者到晚年仍持有大量资产。
Rich people, women, and healthy people live much longer than their poor, male, and sick counterparts. Two extremes, taken from our analysis of single people in the Assets and Health Dynamics of the Oldest Old (AHEAD) dataset, illustrate this point: an unhealthy 70-year-old male at the twentieth percentile of the permanent income distribution expects to live only 6 more years, that is, to age 76. In contrast, a healthy 70-year-old woman at the eightieth percentile of the permanent income distribution expects to live 16 more years, thus making it to age 86.] Such significant differences in life expectancy could, all else equal, lead to significant differ ences in saving behavior. A related observation is that people with high permanent incomes keep large amounts of assets until very late in life. Table 1, also based on the