Аннотация:To overcome incomplete explanations of cross-cultural differences in fertility behaviour, three complementary approaches are systematically related to each other: the 'demand'-based economic theory of fertility (ETF), a revised version of the 'supply'-based 'value-of-children'-approach (VOC) as a special theory of the general social theory of social production functions, and the framing theory of variable rationality. A comprehensive model is specified, which accounts both for the variable efficiency of having children for the optimization of physical well-being and of social esteem of (potential) parents, and for the variable rationality of fertility decisions. The model is tested with a data set, which comprises information on VOC and fertility of women within social settings of 10 societies (Peoples Republic of China, India, Indonesia, South Africa, Ghana, Israel, Palestine, Turkey, the Czech Republic, and Germany), using multivariate models with births of different parity as dependents. As empirical research both on ETF and VOC only exists for intra-societal comparisons, the simultaneous test in a cross-cultural context goes beyond the current state of fertility research. It provides evidence about the cross-cultural validity of the model, systematic effects of VOC on fertility, and changing rationality of fertility decisions in the demographic transition.
