What hypotheses can research on son preference in Asia offer for European historical demographic research?

What insights can studies of son preference in Asia offer European historical demographers? Research on Asia is far easier than on historical Europe, given the scope for in-depth studies of a contemporary phenomenon instead of using available historical data. Levels of sex-selection have also been high in Asia, which makes it easier to analyze its correlates. This enables developing hypotheses that might be useful in studies of historical Europe. Studies in Asia indicate that, in rigidly patrilineal societies, son preference forms part of households' strategy for managing their assets and risks. The extent of sex-selection varied enormously over time within a given setting, rising sharply when households faced heightened risk --- such as war, or the unwinding of Communist regimes that offered communal access to resources --- and decreasing as modern state pension systems mature. These household strategies also affect the life-chances of other household members, including marriage restriction to reduce asset fragmentation. Kinship systems shape the rights of different categories of household members and the norms of cooperation between them — including between generations, spouses, and siblings of different genders and birth orders. This paper offers some hypotheses on the implications of variations in patrilineal kinship systems in Europe for the life-chances of different categories of household members. For purposes of constructing hypotheses that can be tested if data permit, the European kinship systems are contrasted in a stylized way, as those based on a 'lifeboat' ethic of jettisoning non-heirs from the household, versus those based on a more 'corporate' ethic in which the household seeks to support all its members. Historical demographers working on Europe have rich fields to explore, given the region's diversity: of kinship systems, of economic opportunities, and of exposure to major risks such as wars, famine, and the establishment and dis-establishment of Communism. [ABSTRACT FROM AUTHOR]