People aren’t all straight, gay, or bisexual. Scientists have begun taking notice of a significant number of people who identify as asexual. Writing for the Scientific American, Jesse Bering descries asexuality as, “the absence of desire and no sexual interest in males or females, only a complete and lifelong lacuna of sexual attraction toward any human being (or non-human being).”

An estimated 1 percent of British residents describe themselves as “never having a sexual attraction to anymore,” according to a 2004 study cited by Bering. That’s just slightly lower than the 3 percent of people who identified themselves as attracted to the same sex. An aversion to sex can stem from childhood trauma or chemical imbalances, but some research points to asexuality as being a true fourth sexual orientation that’s “due neither to genetic anomaly or environmental assault.”

One 18-year-old asexual described her feelings to the University of Michigan saying:

I just don’t feel sexual attraction to people. I love the human form and can regard individuals as works of art and find people aesthetically pleasing, but I don’t ever want to come into sexual contact with even the most beautiful of people.

Source: The Scientific American

The wisdom of crowds has become a modern motif, a “cultural mantra” adopted with zeal across party and discipline lines, Jonathan V. Last observes for In Character. Conservatives clicked with its endorsement of the free market; liberals connected with its egalitarian appeal. “And nearly everyone associated with the Internet glommed on because they understood that it was, in large part, an exaltation of the new medium that placed the World Wide Web near the center of an entire world view,” he writes.

However many good things have come from crowd-sourcing, though, Last cautions that we devalue the wisdom of individuals at our own peril. Sometimes, for example, crowds are fooled: Enron’s stock was valued at over $40/share just months before the company declared bankruptcy, he notes, proffering the parallel tale of six Cornell business school students who, studying Enron for a research project in 1998, “concluded that the company was a house of cards.”

What appears to be crowd consensus can also be skewed by a handful of vociferous or aggressive members. Those rating systems on sites like Amazon.com? “New research confirms what some may already suspect: Those ratings can easily be swayed by a small group of highly active users,” Kristina Grifantini reports for Technology Review.

For Last, the real loss is creativity: “Even if crowds can reach wise decisions, they don’t create,” he writes. “Genius and inspiration are the province of individuals.”

Sources: In Character, Technology Review

There’s a good reason that people say you should “sleep on it” when facing a tough problem—it helps! A new study suggests dreaming is beneficial for problem solving. Psychology Today reports, “In REM sleep, cortical activation spreads from whatever one’s been pondering to marshal associated ideas, thanks to changes in levels of the neurotransmitters norepinephrine and acetylcholine.” Jasper Johns, Jack Nicklaus and many others have credited their dreams for successful ideas. A co-author of the study adds: “So many times, we already have the solution somewhere in our brain. It just needs an extra 'boost' before it can be accessed.”

Source: Psychology Today

Thinking about love makes people better at creative problem solving, while sex is more shortsighted. That's according to research highlighted by Miller-McCune. The idea is that love “is dreamy, and dreams are linked to creativity. Sex, on the other hand, is about achieving an immediate goal.”

Source: Miller-McCune

Image by  JLStricklin , licensed under  Creative Commons . 

Married men with Asperger’s Syndrome, a socially alienating form of autism, often make extremely loyal and hardworking spouses, writes Richard Howlin for Psychotherapy Networker. “Their single-minded focus appears to filter out the distracting social world and they often show immense dedication to their families,” he adds.

But in some cases, Howlin, a clinical developmental psychologist, has found women want their husbands with Asperger's to become more relational, which leads to confusion and avoidance when interpersonal conflicts arise. He writes about one of his clients:

I've always been taken by the idea that there are conventional and unconventional ways of expressing love in any given situation. As relational beings, we have to be clear about what kind of expression we need or desire. Like most high-functioning men with AS, Mark understood the core of love to be loyalty, dependability, and hard work. Cathy will need to come to terms with the possibility that this may not be enough for her. The decision about whether Mark ultimately offers her the kind of affection and growth she's looking for in a relationship can only be made by her.

Source: Psychotherapy Networker 

Image by Joe in DC, licensed under Creative Commons.

Cooking food is the defining activity that makes us human, according to Harvard biological anthropologist and primatologist Richard Wrangham. In an interview with Seed, Wrangham says that cooking food makes it easier to digest calories, which may have led to our evolutionary dominance over other species. It has also created a system of ownership, where food is saved and owned, rather than eaten straight off the vine like monkeys. 

This ownership society also led to our societal system of marriage, according to Wrangham, where dominant males do “manly” things, like hunt, pillage, and talk politics, while relying on females to cook the dinner. Marriage, Wrangham says, is essentially a “protection racket in which the woman is required to feed a man because of the threat of having her food taken by other men.”

No word from Wrangham on why cooking is such a male-dominated profession.

Source:  Seed  

Image by  liber , licensed under  Creative Commons . 

While recent studies show that pregnancy and childbirth positively alter the brain chemistry of mothers, could parenting have a similar impact on men?

The 2005 book The Mommy Brain documented research by Craig Kinsley and Kelly Lambert on female rats who were either pregnant or recent mothers, showing that motherhood sharpened their senses and increased their motivation and resilience. Susan Kuchinskas reports for Miller-McCune that this same team is now concentrating on fathers. Their research on mice, along with similar studies on monkeys and humans, suggests that fatherhood chemically alters men to make them better fathers.

“Loving a woman and fathering her children changes a man’s body and brain in ways that make him more canny and resourceful,” Kuchinskas writes, “while improving his ability to handle stress. At the same time, living with the woman he loves alters a man’s hormones and neurochemistry to make him a better mate.”

Examples in nature include: the California deer mouse, who stays around the home after mating to groom and look after his kids; the male marmoset, whose hormones cause him to gain weight along with his mate during pregnancy; and, the “highly monogamous” titi monkey, who mates for life and allows his offspring to cling to his body.

In humans, studies have found that married men have lower levels of the hormone testosterone, while new fathers exhibit higher levels of prolactin. Both of these conditions positively influence a father’s parenting skills by increasing his sympathy and motivation to help his offspring.

Interestingly, a study by the Wisconsin National Primate Research Center suggests that lower testosterone could actually be triggered by a newborn baby’s smell. Scientists at the center separated marmoset fathers from their families and then exposed them to scent from their babies’ genitals. Within 20 minutes, their testosterone levels dropped.

Image by  Michelleannb , licensed under  Creative Commons .

Source: Miller-McCune