Anderson, Kermyt G., Hillard S. Kaplan, and Jane B. Lancaster. 2006. Demographic correlates of paternity confidence and pregnancy outcomes among Albuquerque men. American Journal of Physical Anthropology 131(4): 560 - 571.

This paper examines the demographic correlates of paternity confidence, or men’s assessment of the likelihood that they are the genetic father of a particular child. Evolutionary theory predicts that men will provide less parental investment for putative genetic offspring who are unlikely to be their actual offspring, but confidence of paternity has not been as extensively examined as its importance would warrant. Using self-reported data on paternity confidence in 3,360 pregnancies reported by men living in Albuquerque, New Mexico (USA), we find that low paternity confidence is more common among unmarried couples and for unplanned pregnancies. We also find that men are more likely not to state paternity confidence (i.e., refuse to answer the question) if the pregnancy was unplanned. We additionally examine the pregnancy outcomes associated with confidence of paternity. We find that low paternity confidence pregnancies are significantly more likely to be aborted, and pregnancies for which paternity confidence is unstated are more likely to be aborted or to miscarry. Both abortion and miscarriage are associated with unmarried couples, with unplanned pregnancies, and with couples who have few or no children together. 

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Last modified: 11-07-06
by Kermyt G. Anderson