Environmental mortality threat accelerate individuals' reproduction timing: A life history theory perspective

[Speaker] Hu, Yuanjie:1
[Co-author] Zhang, Hongchuan:1, Hou, Jiawei:1, Dou, Donghui:1
1:Central University of Finance and Economics (China (People's Republic of China))

The life history theory suggests that one may choose to reproduce early when environmental mortality increases. We performed a series of study to test this hypothesis in China. In study 1, a negative correlation was confirmed between average age at first marriage and accidental death rate in the 31 provinces, by using 2010 6th census data. In study 2, we surveyed people's attitude towards earlier marriage and reproduction. Individuals in Urumqi where higher mortality threat was present were more positive compared to those in another similar ethnic city. In study 3, undergraduate participants read a news story on recent increasing violent crimes or a story about finding keys before answering the same questions as in study 2. Participants in the former condition were more willing to choose earlier marriage and reproduction. In sum, our findings proved that the accelerating effect of environmental mortality on reproductive timing is a culture-general phenomenon.
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