The importance of the savings device in precautionary savings: Empirical evidence from rural Bangladesh
利用孟加拉国月度面板数据，检验农村家庭消费决策中的预防性行为是否因储蓄工具形式不同而存在差异，发现收入对储蓄的影响确实取决于储蓄工具，而将不同储蓄工具视为可互换会误判预防性储蓄的原因。
Abstract We test if precautionary behavior in the consumption decisions of rural households differs across the forms of savings. Using monthly panel data from Bangladesh, we find that, on average, the savings device does not matter but that the effect of income on savings indeed depends on the savings device. Precautionary savings in the form of staple grain are relatively constant across income quartiles, while nongrain precautionary savings vary across income quartiles. Previous studies, which treat these two types of savings devices as fungible, misdiagnose the reasons for, and by extension the market failures behind, a large percentage of the precautionary savings held by rural households.