Much of the literature on assortative mating has centred on the social contexts of immigrant‐receiving countries in the West. This article examines ethnic assortative mating (endogamy) against rising volumes and intensity of migration within a multi‐ethnic lower middle‐income country. We used full enumeration data from the 2010 Indonesian Population Census to create a national dataset of husband–wife pairs (n = 47.8 million couples), and five subsets of married couples from provinces with the highest proportion of lifetime migrants: Riau, Riau Islands, Jakarta, East Kalimantan, and West Papua (n = 4.05 million). First, we examined the association between migration, group size, and endogamy at the provincial level. We found a negative association between internal migrant stock and endogamy across 33 provinces in Indonesia. Using endogamy as a proxy of the strength of ethnic boundaries, we have shown that accounting for group size at the provincial level changes the overall ranking of endogamy among ethnic groups. Second, drawing on the subsets of couples in the five provinces with the highest proportion of migrants in their population, we used multivariate analysis to examine how migration status correlates with the likelihood of endogamy at the individual level. Controlling for sex, group size, age, education, and religion, we found that the relationship between an individual's migration status and endogamy varies across the five provinces, reflecting the different nature and history of migration, and the ethno‐religious composition in these regions.

中文翻译：

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印度尼西亚的内部迁移，群体规模和种族内婚

有关配偶交配的许多文献都集中在西方移民接收国的社会背景下。本文研究了在多种族的中下收入国家中人口数量的增加和移民强度的变化。我们使用了2010年印度尼西亚人口普查的完整枚举数据，创建了一个全国性的夫妻数据集（n = 4780万对），以及来自一生移民比例最高的省份的五个子集：廖内，廖内群岛，雅加达，东加里曼丹和西巴布亚（ñ= 405万）。首先，我们在省一级研究了移民，群体规模和同性配偶之间的关系。我们发现印度尼西亚33个省的内部移民存量与内婚制之间存在负相关关系。用内婚制作为种族边界优势的代表，我们已经表明，在省一级考虑群体规模会改变各族之间内婚制的总体排名。其次，我们利用五个省份中移民人口比例最高的五个省份的子集，我们使用多变量分析来研究移民状况与个体水平上内婚的可能性之间的关系。通过控制性别，群体规模，年龄，教育程度和宗教信仰，我们发现个体之间的关系