Word: mates
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...human reproductive behavior is a complicated thing, part of the reason is that it's designed to serve two clashing purposes. On the one hand, we're driven to mate a lot. On the other hand, we want to mate well so that our offspring survive. If you're a female, you get only a few rolls of the reproductive dice in a lifetime. If you're a male, your freedom to conceive is limited only by the availability of willing partners, but the demands of providing for too big a brood are a powerful incentive to limit your pairings...
...Martie Haselton, an associate professor of psychology at UCLA, women report that when they're ovulating, their partners are more loving and attentive and, significantly, more jealous of other men. "The men are picking up on something in their partner's behavior that tells them to do more mate-guarding," Haselton says...
...doesn't always deliver the goods. For all the joy it promises, it can also play us for fools, particularly when it convinces us that we've found the right person, only to upend our expectations later. Birth-control pills that mask a woman's ability to detect her mate's incompatible MHC are one way bad love can slip past our perimeters. Adrenaline is another. Any overwhelming emotional experience that ratchets up your sensory system can distort your perceptions, persuading you to take a chance on someone you should avoid...
...Martie Haselton, an associate professor of psychology at UCLA, women report that when they're ovulating, their partners are more loving and attentive and, significantly, more jealous of other men. "The men are picking up on something in their partner's behavior that tells them to do more mate-guarding," Haselton says...
...doesn't always deliver the goods. For all the joy it promises, it can also play us for fools, particularly when it convinces us that we've found the right person, only to upend our expectations later. Birth-control pills that mask a woman's ability to detect her mate's incompatible MHC are one way bad love can slip past our perimeters. Adrenaline is another. Any overwhelming emotional experience that ratchets up your sensory system can distort your perceptions, persuading you to take a chance on someone you should avoid...