Wealth modifies relationships between kin and women's fertility in high-income countries
Schaffnit, S. & Sear, R. (2014). Behavioral Ecology, 25(4), 834-842 10.1093/beheco/aru059
Kin are generally expected to behave more cooperatively with their relatives than with unrelated individuals, and this cooperative behavior may result in positive effects on fitness. Such kin effects are likely to be modified by resource availability: in contexts of resource stress, cooperation among kin may disappear or weaken as more energy is required for investment in self. We use …