Savings After Retirement: A Survey
综述了美国退休家庭储蓄模式对生命周期模型的挑战，指出医疗支出和寿命不确定性能解释大部分储蓄，但需进一步区分预防性储蓄与遗赠动机，并探讨遗赠背后的利他、风险分担或交换动机。
The saving patterns of retired US households pose a challenge to the basic life-cycle model of saving. The observed patterns of out-of-pocket medical expenses, which rise quickly with age and income during retirement, and heterogeneous life span risk can explain a significant portion of US saving during retirement. However, more work is needed to distinguish these precautionary saving motives from other motives, such as the desire to leave bequests. Progress toward disentangling these motivations has been made by matching other features of the data, such as public and private insurance choices. An improved understanding of whether intended bequests left to children and spouses are due to altruism, risk sharing, exchange motivations, or a combination of these factors is an important direction for future research.