Why Do Couples and Singles Save during Retirement? Household Heterogeneity and Its Aggregate Implications
研究了退休夫妻和单身人士面对长寿和医疗支出风险时的储蓄动机，发现储蓄动机因婚姻状况、永久收入和年龄而异，遗赠动机是总体退休财富的关键决定因素。
We estimate a model of savings for retired couples and singles who face longevity and medical expense risks and in which couples can leave bequests both when the first spouse dies and when the last spouse dies. We show that saving motives vary by marital status, permanent income, and age. We find that most households save more for medical expenses than for bequests but that richer households and couples, who hold most of the wealth, save more for bequests. As a result, bequest motives are a key determinant of aggregate retirement wealth.