Replication Data for: The ecology of immigrant naturalisation: a life course approach in the context of institutional conditions.

Traditionally, immigrants’ propensity to naturalize is attributed to individual characteristics and the origin country. Recently scholars increasingly recognise that naturalisation decisions do not take place in a vacuum: they are conditioned both by the individual life course of immigrants, such as the age at migration and family situation, as well as the opportunity structure set by citizenship policies of the destination country. Yet it is less clear what impact specific policy changes have, and to whom these changes matter most. In this paper we address these questions by analysing citizenship acquisition among first generation immigrants in the Netherlands in light of a restriction in citizenship policy in 2003. We employ unique micro-level longitudinal data from Dutch municipal population registers between 1995 until 2012, which allow us to track naturalisation among different immigration cohorts. We find evidence that indeed naturalisation is part of a larger life course trajectory: immigrants who arrive at a younger age in the Netherlands naturalise more often and so do immigrants with a native partner, or a foreign-born partner who also naturalises. Policy also matters: migrants naturalise later and less often under more restrictive institutional conditions, especially migrants from less developed and politically unstable countries of origin.

传统上，移民的入籍倾向被归因于个体特征与原籍国。近年来，学者们日益认识到，入籍决策并非在真空环境中形成：其既受移民个体生命历程（如移民年龄、家庭状况）的制约，也受目的地国公民身份政策所设定的机会结构的影响。然而，目前学界尚未明确特定政策变革会产生何种具体影响，以及此类变革对哪些群体的影响最为显著。本文以2003年荷兰公民身份政策收紧为研究背景，通过分析该国第一代移民的公民身份获取情况来解答上述问题。我们采用了1995年至2012年间荷兰市政人口登记系统独有的微观纵向数据，借此得以追踪不同移民队列的入籍动态。研究结果显示，入籍确实是更宏大的生命历程轨迹的组成部分：在荷兰年轻时入境的移民入籍率更高，拥有本土伴侣或同样完成入籍的外国出生伴侣的移民亦是如此。政策因素同样具有显著作用：在更为严苛的制度环境下，移民的入籍时间更晚、入籍率更低，尤其是来自欠发达国家与政治不稳定原籍国的移民。