From Live Science:
How long do you wait before having sex with a new sweetie? Three dates? 10?
A new study suggests that both males and females benefit from extended courtships in which mating is delayed: By holding out, females can more accurately screen for potential providers, while waiting males can prove they're suitable mates.
The study, published this month in the Journal of Theoretical Biology and conducted by researchers at University College London, University of Warwick, and London School of Economics and Political Science, invoked game theory to examine the strategies used by potential partners of various species, including humans; the game ended when either the male or female quit, or when the female accepted the male as a mating partner. Scientists used a mathematical model dependent upon evolutionarily stable equilibrium behaviors, in which both males and females are doing as well as possible against the other's actions.
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