Department of Sociology, Anthropology, and Social Work, Eastern Connecticut State University, USA.
Demography. 2009 Nov;46(4):717-37. doi: 10.1353/dem.0.0082.
This article extends the emerging body of life course research on poverty by empirically identifying the incidence, chronicity, and age pattern of American poverty and how these dimensions have changed during the period 1968-2000. Using the Panel Study of Income Dynamics, we construct a series of life tables that estimate the risk of poverty for adults during their 20s, 30s, 40s, 50s, 60s, and 70s, and compare these estimates for Americans in the 1970s, 1980s, and 1990s. Our empirical results suggest that the risk of acute poverty increased substantially, particularly in the 1990s. This observed increase was especially pronounced for individuals in their 20s, 30s, and 40s; for all age groups with respect to extreme poverty; and for white males. On the other hand, the risk of chronic poverty declined during the 1990s (as measured by the percentage of the poor who experienced five or more years of poverty within a 10-year interval). The results in this article tell a very different story than the Census Bureau's yearly cross-sectional rates, which have shown little overall change in the U.S. poverty rate during this 30-year period. In contrast, a life course approach reveals a rising economic risk of acute poverty for individuals, one that is consistent with recent observations and research suggesting that a growing number of Americans will eventually find themselves in an economically precarious position.
本文通过实证研究,确定了美国贫困的发生率、持续性和年龄模式,以及这些维度在 1968 年至 2000 年间的变化,从而扩展了关于贫困的生命历程研究的新兴领域。利用收入动态面板研究,我们构建了一系列生命表,估算了成年人在 20 多岁、30 多岁、40 多岁、50 多岁、60 多岁和 70 多岁时陷入贫困的风险,并将这些估计值与 20 世纪 70 年代、80 年代和 90 年代的美国人进行了比较。我们的实证结果表明,急性贫困的风险大幅增加,尤其是在 90 年代。这种观察到的增加在 20 多岁、30 多岁和 40 多岁的人群中尤为明显;在所有年龄段的极度贫困人群中;以及在白人男性中。另一方面,在 90 年代,慢性贫困的风险下降(以在 10 年内经历 5 年或以上贫困的贫困人口比例来衡量)。本文的结果与人口普查局每年的横断面数据形成鲜明对比,后者表明,在这 30 年期间,美国的贫困率总体变化不大。相比之下,生命历程方法揭示了个人急性贫困的经济风险不断上升,这与最近的观察和研究结果一致,即越来越多的美国人最终将发现自己处于经济不稳定的境地。