Assessing validity and application scope of the intrinsic estimator approach to the age-period-cohort problem.

Assessing validity and application scope of the intrinsic estimator approach to the age-period-cohort problem.
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DOI:
10.1007/s13524-013-0243-z
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发表时间:
2013-12
期刊:
影响因子:
3.5
通讯作者:
Luo, Liying
Luo, Liying
中科院分区:
法学1区
文献类型:
--
作者:
Luo, Liying

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在许多不同领域,社会科学家希望了解与年龄、时间段和群体成员资格相关的时间变化。在为解决年龄-周期-队列分析中的识别问题而提出的方法中,内在估计器 (IE) 被认为很少施加假设,并且可以对年龄、周期和队列组的独立影响产生良好的估计。本文从理论上评估了 IE 的有效性和应用范围,并通过仿真说明了其特性。它表明 IE 隐含地假设了对线性年龄、时期和队列效应的约束。这一约束不仅取决于年龄、时期和队列类别的数量,而且对估计也有重要影响。由于这一假设在实证研究中验证起来极其困难(如果不是不可能的话),因此 IE 不能也不应该用于估计年龄、时期和队列效应。
In many different fields, social scientists desire to understand temporal variation associated with age, time period, and cohort membership. Among methods proposed to address the identification problem in age-period-cohort analysis, the Intrinsic Estimator (IE) is reputed to impose few assumptions and to yield good estimates of the independent effects of age, period, and cohort groups. This article assesses the validity and application scope of IE theoretically and illustrates its properties with simulations. It shows that IE implicitly assumes a constraint on the linear age, period, and cohort effects. This constraint not only depends on the number of age, period, and cohort categories but also has non-trivial implications for estimation. Because this assumption is extremely difficult, if not impossible, to verify in empirical research, IE cannot and should not be used to estimate age, period, and cohort effects.
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