evolutionary psychology

237 Reasons Humans Have Sex

Asking why humans have sex might seem like an obvious question. It feels good. It bonds us together. Oh, and the future of the human species depends on it. But prior to the 2007 study, "Why Humans Have Sex," published in the Archives of Sexual Behavior, "the most comprehensive existing taxonomy" cited only eight reasons: "to feel valued by a partner, expressing value for a partner, obtaining relief from stress, nurturing one another, enhancing feelings of personal power, experiencing a partner's power, experiencing pleasure and procreating." Oddly, researchers hadn't delved too deeply into the seemingly simplistic question. With that 2007 study, then, University of Texas psychology professor David Buss handily myth-busted the notion that we can identify humans' rationales for sex on our fingers...

The Wedding Ring Phenomenon

Recently, a Stuff Mom Never Told You listener wrote in with a perplexing question about she terms "the wedding ring phenomenon": "...a guy, lets call him John, told us about how he will wear a wedding ring while trying to pick up women. I thought it was appalling and completely ludicrous, but my husband thought it made sense... I was curious if you know of any research backing this wedding ring phenomenon or if the men in my life are just full of themselves."

Younger Parents Have Boys, Older Parents Have Girls?

Teen parents are more likely to produce boys while middle-aged parents are more like to produce girls. Satoshi Kanazawa over at Psychology Today breaks down this pattern by the numbers and comes up with a couple stunning observations: