出版社：Consejo Superior de Investigaciones Científicas
摘要：A religious precept that forbids sexual intercourse during Lent has remained in effect for centuries in Catholic populations. This interdiction produces a decrease of conceptions and a rebound after that period, which are difficult to detect because in populations that did not exercise effective control of the fecundity a peak of conceptions is observed during the spring. At present, this precept has disappeared as a result of a process of erosion that we do not know enough. With the anonymized data of all the people surviving at the beginning of 2003 and born in Andalusia ( n=8,397,206 ), this paper aims to determine the importance of this interdiction and its vanishing process throughout the twentieth century. This process takes part with the decrease of fertility and the erosion of seasonality of births. Finally, it is also analyzed to what extent this transition to modernity is the result of a process of diffusion that has gone from municipalities with a big population size to small municipalities.
