Seasonality of birth in nineteenth and twentieth century Austria: steps toward a unified theory of human reproductive seasonality
We present an analysis of birth seasonality in nine geographical regions within Austria for two time periods, 1881-1912 and 1947-1959. In the early period, geography, climate, and agricultural patterns were related to birth seasonality. By the later time period, these factors were no longer related to birth seasonality. We propose a “resilience hypothesis,” which suggests two levels of causal influences on birth seasonality. First, underlying the three significant features of birth seasonality patterns around the world are only a small number of major causes. But, second, there are a multiplicity of minor causes that result in small perturbations in the patterns.(AUTHORS)
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- J. Udry & Naomi Morris, 1967. "Seasonality of coitus and seasonality of birth," Demography, Springer;Population Association of America (PAA), vol. 4(2), pages 673-679, June.
- Victor Levy, 1986. "Seasonal fertility cycles in rural Egypt: Behavioral and biological linkages," Demography, Springer;Population Association of America (PAA), vol. 23(1), pages 13-30, February.
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