War, Marriage Markets, and the Sex Ratio at Birth
利用德国巴伐利亚州县级人口普查数据，研究二战前后婚姻市场紧缩（成年性别比下降）如何导致新生儿中男孩比例上升，探讨战争影响出生性别比的机制。
Abstract In belligerent countries, male‐to‐female sex ratios at birth increased during and shortly after the two world wars. These rises occurred amidst dramatically changed marriage‐market conditions caused by war‐related declines in adult sex ratios, and still defy explanation. Based on county‐level census data for the German state of Bavaria in the years just before and immediately after World War II, we explore the reduced‐form relationship between changes in marriage‐market tightness (the adult sex ratio) and changes in the offspring sex ratio, and we discuss potential mechanisms that might link the two. Our results suggest that war‐induced shortfalls of men significantly increased the percentage of boys among newborns.