String theory is an attempt to describe all particles and all forces in nature in one unified theoretical framework. It encompasses quantum mechanics and gravity, and it is based on the idea that the fundamental building blocks of matter are not particles, but strings: objects which have some length, and which can vibrate in different ways.
All indulgences in life are bad for us—or at least it often seems that way. We regularly desire things that provide short-term satisfaction, yet may harbor long-term negative consequences. In order to enjoy these ‘‘guilty pleasures’’ however, we often find ways to justify their consumption. Challenging or adverse experiences serve this purpose well, providing a convenient rationale for self indulgence and making us feel more entitled to a little pleasure.
This paper considers two studies that support the link between adversity and self-reward. Study 1 demonstrates that pain leads to self-reward but only in contexts that frame the experience of pain as “unjust.” Study 2 shows that after pain people are more likely to self-reward with guilty pleasures (chocolate) in preference to other kinds of rewards (a pen).
The studies provide evidence that simply experiencing physical pain facilitates indulgence in guilty pleasures.
{ SAGE | PDF }
Did you know that around 85% of humans only breathe out of one nostril at a time? This fact may surprise you, but even more remarkable is the following: our body follows a pattern and switches from breathing out of one nostril to the other in a cyclical way. Typically, every four hours it switches from left to right, or right to left.
images { John Stezaker, The Voyeur, 1979 | 2 }
What is memory for? Episodic memory enables one to capture the precise details of an experience, and then to recollect this information rapidly whenever and wherever needed. Typical examples of its evolutionary value focus on the individual navigating the world, but the advantages conferred by episodic memory may be more far-reaching than often appreciated. For example, interactions with other people are important for our survival and wellbeing. Might episodic memory be crucial for establishing and/or maintaining interpersonal relationships? To address this question, we examined social relationships in three amnesic patients.
A massive effort to uncover genes involved in depression has largely failed. By combing through the DNA of 34,549 volunteers, an international team of 86 scientists hoped to uncover genetic influences that affect a person’s vulnerability to depression. But the analysis turned up nothing.
The results are the latest in a string of large studies that have failed to pinpoint genetic culprits of depression. […] Depression seems to run in families, leading scientists to think that certain genes are partially behind the disorder. But so far, studies on people diagnosed with depression have failed to reveal these genes.
Materialistic consumers may derive more pleasure from desiring products than they do from actually owning them, and are willing to overspend and go into debt because they believe that future purchases will transform their lives, according to a new study. […]
“Materialists are more likely to overspend and have credit problems, possibly because they believe that acquisitions will increase their happiness and change their lives in meaningful ways. Learning that acquisition is less pleasurable than anticipating a purchase may help them delay purchases until they are better able to afford them,” the author concludes.
People are often broken into two groups when doing hypnosis research. High hypnotizable people and non-hypnozable people. As most people have heard, hypnosis does not work on everybody. But why is that? Research shows that high hypnotizable people actually have structural differences in their brains.
The DNA that makes up your genes is entwined in 46 chromosomes, each of which ends with a telomere, a stretch of DNA that protects the chromosome like the plastic tip on a shoelace. Telomeres are quite long at birth and shorten a bit every time a cell divides; ultimately, after scores of divisions, very little telomere remains and the cell becomes inactive or dies. And because elderly people generally have shorter telomeres than younger people, scientists believe that telomere length may be a marker for longevity as well as cellular health.
Now researchers are discovering that experiences can affect telomeres—intriguing new evidence for nurture’s impact on nature. […] “We found that children who experience multiple forms of violence had the fastest erosion of their telomeres, compared with children who experienced just one type of violence or did not experience violence at all,” says Idan Shalev, the study’s lead author.
Another study, conducted at Brigham and Women’s Hospital in Boston, hints at possible physical effects of chronic stress. Among a sample of 5,243 nurses nationwide, those who suffered from phobias had significantly shorter telomeres than those who didn’t. […]
While researchers are adding to the list of things that can shorten telomeres (smoking, for instance, and infectious diseases), they’ve also zeroed in on activities that seem to slow down telomere degradation. In a German study, people in their 40s and 50s had telomeres about 40 percent shorter than people in their 20s if they were sedentary, but only 10 percent shorter if they were dedicated runners.
photo { Bill Brandt, Nude, London, April, 1954 }
Myth: Sugar makes kids hyper.
Fact: Many studies have shown that consuming large amounts of sugar does not inherently make kids (or adults) bounce off the walls. Dr. Tom Robinson explains that because so many parents (and thus children) expect eating sweets to make them hyper, it becomes a self-fulfilling prophecy. “The way we think we should feel has a lot to do with how we do feel,” he said. The Journal of the American Medical Association published a review of 23 studies on the subject, and the results back up Robinson’s rationale.
related { Sugar can make you dumb, US scientists warn }
photo { Steve McCurry, Shaolin Monastery, Hunan Province, China, 2004 }
China has been running the world’s largest and most successful eugenics program for more than thirty years, driving China’s ever-faster rise as the global superpower. […] Chinese eugenics will quickly become even more effective, given its massive investment in genomic research on human mental and physical traits. BGI-Shenzhen employs more than 4,000 researchers. It has far more “next-generation” DNA sequencers that anywhere else in the world, and is sequencing more than 50,000 genomes per year. It recently acquired the California firm Complete Genomics to become a major rival to Illumina.
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A new kind of misplaced worries is likely to become more and more common. The ever-accelerating current scientific and technological revolution results in a flow of problems and opportunities that presents unprecedented cognitive and decisional challenges. Our capacity to anticipate these problems and opportunities is swamped by their number, novelty, speed of arrival, and complexity.
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If we have a million photos, we tend to value each one less than if we only had ten. The internet forces a general devaluation of the written word: a global deflation in the average word’s value on many axes. As each word tends to get less reading-time and attention and to be worth less money at the consumer end, it naturally tends to absorb less writing-time and editorial attention on the production side. Gradually, as the time invested by the average writer and the average reader in the average sentence falls, society’s ability to communicate in writing decays. And this threat to our capacity to read and write is a slow-motion body-blow to science, scholarship, the arts—to nearly everything, in fact, that is distinctively human, that muskrats and dolphins can’t do just as well or better.
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I know that my own perception of time has been changed by technology. If I go from using a fast computer or web connection to using even a slightly slower one, processes that take just a second or two longer—waking the machine from sleep, launching an application, opening a web page—seem almost intolerably slow. Never before have I been so aware of, and annoyed by, the passage of mere seconds. […] As we experience faster flows of information online, we become, in other words, less patient people. But it’s not just a network effect. The phenomenon is amplified by the constant buzz of Facebook, Twitter, texting, and social networking in general. Society’s “activity rhythm” has never been so harried. Impatience is a contagion spread from gadget to gadget.
Researchers have found that placebo treatments—interventions with no active drug ingredients—can stimulate real physiological responses, from changes in heart rate and blood pressure to chemical activity in the brain, in cases involving pain, depression, anxiety, fatigue, and even some symptoms of Parkinson’s.
The challenge now, says Kaptchuk, is to uncover the mechanisms behind these physiological responses—what is happening in our bodies, in our brains, in the method of placebo delivery (pill or needle, for example), even in the room where placebo treatments are administered (are the physical surroundings calming? is the doctor caring or curt?). The placebo effect is actually many effects woven together—some stronger than others—and that’s what Kaptchuk hopes his “pill versus needle” study shows. The experiment, among the first to tease apart the components of placebo response, shows that the methods of placebo administration are as important as the administration itself, he explains. It’s valuable insight for any caregiver: patients’ perceptions matter, and the ways physicians frame perceptions can have significant effects on their patients’ health. […]
What if he simply told people they were taking placebos? The question ultimately inspired a pilot study, published by the peer-reviewed science and medicine journal PLOS ONE in 2010, that yielded his most famous findings to date. His team again compared two groups of IBS sufferers. One group received no treatment. The other patients were told they’d be taking fake, inert drugs (delivered in bottles labeled “placebo pills”) and told also that placebos often have healing effects.
The study’s results shocked the investigators themselves: even patients who knew they were taking placebos described real improvement, reporting twice as much symptom relief as the no-treatment group. That’s a difference so significant, says Kaptchuk, it’s comparable to the improvement seen in trials for the best real IBS drugs.
photo { Erwin Blumenfeld, Nude Light,Shadow, New York, 1952 }
Evolutionary psychologists who study mating behavior often begin with a hypothesis about how modern humans mate: say, that men think about sex more than women do. Then they gather evidence — from studies, statistics and surveys — to support that assumption. Finally, and here’s where the leap occurs, they construct an evolutionary theory to explain why men think about sex more than women, where that gender difference came from, what adaptive purpose it served in antiquity, and why we’re stuck with the consequences today.
Lately, however, a new cohort of scientists have been challenging the very existence of the gender differences in sexual behavior that Darwinians have spent the past 40 years trying to explain and justify on evolutionary grounds. […]
Everyone has always assumed — and early research had shown — that women desired fewer sexual partners over a lifetime than men. But in 2003, two behavioral psychologists, Michele G. Alexander and Terri D. Fisher, published the results of a study that used a “bogus pipeline” — a fake lie detector. When asked about actual sexual partners, rather than just theoretical desires, the participants who were not attached to the fake lie detector displayed typical gender differences. Men reported having had more sexual partners than women. But when participants believed that lies about their sexual history would be revealed by the fake lie detector, gender differences in reported sexual partners vanished. In fact, women reported slightly more sexual partners (a mean of 4.4) than did men (a mean of 4.0).
In 2009, another long-assumed gender difference in mating — that women are choosier than men — also came under siege. In speed dating, as in life, the social norm instructs women to sit in one place, waiting to be approached, while the men rotate tables. But in one study of speed-dating behavior, the evolutionary psychologists Eli J. Finkel and Paul W. Eastwick switched the “rotator” role. The men remained seated and the women rotated. By manipulating this component of the gender script, the researchers discovered that women became less selective — they behaved more like stereotypical men — while men were more selective and behaved more like stereotypical women. The mere act of physically approaching a potential romantic partner, they argued, engendered more favorable assessments of that person.
Recently, a third pillar appeared to fall. To back up the assumption that an enormous gap exists between men’s and women’s attitudes toward casual sex, evolutionary psychologists typically cite a classic study published in 1989. Men and women on a college campus were approached in public and propositioned with offers of casual sex by “confederates” who worked for the study. The confederate would say: “I have been noticing you around campus and I find you to be very attractive.” The confederate would then ask one of three questions: (1) “Would you go out with me tonight?” (2) “Would you come over to my apartment tonight?” or (3) “Would you go to bed with me tonight?”
Roughly equal numbers of men and women agreed to the date. But women were much less likely to agree to go to the confederate’s apartment. As for going to bed with the confederate, zero women said yes, while about 70 percent of males agreed.
Those results seemed definitive — until a few years ago, when Terri D. Conley, a psychologist at the University of Michigan, set out to re-examine what she calls “one of the largest documented sexuality gender differences,” that men have a greater interest in casual sex than women.
Ms. Conley found the methodology of the 1989 paper to be less than ideal. “No one really comes up to you in the middle of the quad and asks, ‘Will you have sex with me?’ ” she told me recently. “So there needs to be a context for it. If you ask people what they would do in a specific situation, that’s a far more accurate way of getting responses.” In her study, when men and women considered offers of casual sex from famous people, or offers from close friends whom they were told were good in bed, the gender differences in acceptance of casual-sex proposals evaporated nearly to zero.
photo { George Brassaï }
“I realized from quite early on in my childhood that I saw things differently than other people,” he wrote. “But more often than not, it’s helped me in my life. Psychopathy (if that’s what you want to call it) is like a medicine for modern times. If you take it in moderation, it can prove extremely beneficial. It can alleviate a lot of existential ailments that we would otherwise fall victim to because our fragile psychological immune systems just aren’t up to the job of protecting us. But if you take too much of it, if you overdose on it, then there can, as is the case with all medicines, be some rather unpleasant side effects.”
Might this eminent criminal defense lawyer have a point? Was psychopathy a “medicine for modern times”? The typical traits of a psychopath are ruthlessness, charm, focus, mental toughness, fearlessness, mindfulness and action. Who wouldn’t at certain points in their lives benefit from kicking one or two of these up a notch?
I decided to put the theory to the test. As well as meeting the doctors in Broadmoor, I would talk with some of the patients. I would present them with problems from normal, everyday life, the usual stuff we moan about at happy hour, and see what their take on it was. […]
Around 20 percent of the patients housed there at any one time are what you might call “pure” psychopaths. These are confined to the two Dangerous and Severe Personality Disorder (DSPD) wards. The rest present with so-called cluster disorders: clinically significant psychopathic traits, accompanied by traits typically associated with other personality disorders—borderline, paranoid and narcissistic, for example. Or they may have symptoms such as delusions and hallucinations indicative of psychosis. […]
“I think the problem is that people spend so much time worrying about what might happen, what might go wrong, that they completely lose sight of the present. They completely overlook the fact that, actually, right now, everything’s perfectly fine. So the trick, whenever possible, I propose, is to stop your brain from running on ahead of you.”
Based on prior research, it was hypothesized that heterosexual participants, especially women, who do not perceive themselves as having a strong, close, positive relationship with their opposite-sex parent would be more likely to engage in or attempt to engage in casual sexual behavior (hookups). Also, men were expected to be more satisfied with, and more in agreement with, hookup behavior than women. The results were partially consistent with the hypotheses. Men were more satisfied with and more in agreement with hookup behavior than women. But, opposite sex parent-child relationship quality only affected men’s agreement with the hookup behavior of their peers. Men with lower relationship quality with their mothers agreed more with the hookup behavior of their peers.
{ Journal of Social, Evolutionary, and Cultural Psychology | PDF }
Take the biggest question of all, for example: what is the ultimate nature of reality? We used to think the answer was atoms. Then we learned about the electron and then about the atomic nucleus. Then it became clear that this nucleus was composed of protons and neutrons. Then these particles were discovered to be composed of quarks held together by gluons. And now we’re in trouble. We know these particles follow those strange quantum laws, and the consequences of this lead us towards an extraordinary answer to our very ordinary question.
At heart, quantum theory is about probabilities. No particle has a real existence that we can speak of; we can only express the probability of finding it somewhere. In fact, quantum theory is really about getting access to information.
Information is not an abstract entity. It is always encoded in something physical: a computer’s hard disk, say, or molecules of ink on a page. So if quantum theory is leading us towards the idea that information lies at the heart of reality, this information must be stored somehow in the physical universe.
Faced with such a staggering notion, scientists began to seek out the supporting evidence. And, though it’s very early days, it seems there is some.
photo { Danny Lyon }
A drug applied to the ears of mice deafened by noise can restore some hearing in the animals. By blocking a key protein, the drug allows sound-sensing cells that are damaged by noise to regrow. The treatment isn’t anywhere near ready for use in humans, but the advance at least raises the prospect of restoring hearing to some deafened people.
image { Yoshifumi Hayashi }
We tested whether eye color influences perception of trustworthiness. Facial photographs of 40 female and 40 male students were rated for perceived trustworthiness. Eye color had a significant effect, the brown-eyed faces being perceived as more trustworthy than the blue-eyed ones.
As we age, it just may be the ability to filter and eliminate old information – rather than take in the new stuff - that makes it harder to learn, scientists report.
“When you are young, your brain is able to strengthen certain connections and weaken certain connections to make new memories,” said Dr. Joe Z. Tsien, neuroscientist. It’s that critical weakening that appears hampered in the older brain, according to a study in the journal Scientific Reports. […]
“We know we lose the ability to perfectly speak a foreign language if we learn than language after the onset of sexual maturity. I can learn English but my Chinese accent is very difficult to get rid of. The question is why,” Tsien said.
photo { Achim Lippoth }
Scientists think that they have the answer to why the skin on human fingers and toes shrivels up like an old prune when we soak in the bath. Laboratory tests confirmed a theory that wrinkly fingers improve our grip on wet or submerged objects, working to channel away the water like the rain treads in car tyres. […]
Wrinkled fingers could have helped our ancestors to gather food from wet vegetation or streams, Smulders adds. The analogous effect in the toes could help us to get a better footing in the rain.
For decades, consensus among psychologists has held that a group of five personality traits –– or slight variations of these five –– are a universal feature of human psychology. However, a study by anthropologists at UC Santa Barbara raises doubt about the veracity of that five-factor model (FFM) of personality structure as it relates to indigenous populations. […] Studying the Tsimane, an isolated indigenous group in central Bolivia, Michael Gurven, a professor of anthropology at UCSB and lead author of the paper, found they did not necessarily exhibit the five broad dimensions of personality –– openness, conscientiousness, extraversion, agreeableness, and neuroticism. While previous research has found strong support for what experts refer to as the “Big Five” in more developed countries and across some cultures, Gurven and his team discovered more evidence of a Tsimane “Big Two” –– prosociality and industriousness.
