It seems you’re more likely to die from a heart attack when having sex while having an affair, than during sex with your regular partner, although this seems largely to apply to men.

A case report in the Journal of Forensic and Legal Medicine reports on the death of a woman who had a heart attack during extra-marital sex, something unusual in women. This is not conclusive evidence for the link between heart attacks and affairs in itself, of course, but the article reviews some suggestive evidence about sex, risk of death, physical and psychological stress.

{ MindHacks | Continue reading }

Why human lifespan is rapidly increasing: solving “longevity riddle” with “revealed-slow-aging” hypothesis.

Healthy life span is rapidly increasing and human aging seems to be postponed. … To explain current increase in longevity, I discuss that certain genetic variants such as hyper-active mTOR (mTarget of Rapamycin) may increase survival early in life at the expense of accelerated aging. In other words, robustness and fast aging may be associated and slow-aging individuals died prematurely in the past. Therefore, until recently, mostly fast-aging individuals managed to survive into old age. The progress of civilization (especially 60 years ago) allowed slow-aging individuals to survive until old age, emerging as healthy centenarians now.

{ fightaging | Continue reading }

{ Six Easy Steps to Avert the Collapse of Civilization | more | Thanks Doug! }

I think the same is true of sex thoughts. People often say they spend a lot of time thinking about sex, but when you beep them they very rarely report it. It’s probably that our sex thoughts, though rare, are much more frequently remembered than other thoughts and so are dramatically overrepresented in retrospective memory.

{ Experimental Philosophy | Continue reading }

photo { Helmut Newton }

As airport security employees scan luggage for a large variety of banned items, they may miss a deadly box cutter if they find a water bottle first. According to new research at Duke University, identifying an easy-to-spot prohibited item such as a water bottle may hinder the discovery of other, harder-to-spot items in the same scan. (…)

Missing items in a complex visual search is not a new idea: in the medical field, it has been known since the 1960s that radiologists tend to miss a second abnormality on an X-ray if they’ve found one already. The concept — dubbed “satisfaction of search” — is that radiologists would find the first target, think they were finished, and move on to the next patient’s X-ray.

{ EurekAlert | Continue reading }

Social psychologists have long observed that humans have a reliable ability to “read” each other. Now evidence is growing that we accomplish this through social signaling, an ancient system of communication that depends on non-verbal communication rather than speech. Pentland and colleagues have concluded that they can often predict outcomes of interactions between people when they observe and quantify these signals. Recent advances in monitoring technology and in computing capabilities make this data collection and analysis—which Pentland calls “reality mining”—possible.

{ American Scientist }

photo { Johan Willner }

Humanity may split into two sub-species in 100,000 years’ time as predicted by HG Wells, an expert has said.

Evolutionary theorist Oliver Curry of the London School of Economics expects a genetic upper class and a dim-witted underclass to emerge.

The human race would peak in the year 3000, he said - before a decline due to dependence on technology.

People would become choosier about their sexual partners, causing humanity to divide into sub-species, he added.

The descendants of the genetic upper class would be tall, slim, healthy, attractive, intelligent, and creative and a far cry from the “underclass” humans who would have evolved into dim-witted, ugly, squat goblin-like creatures.

But in the nearer future, humans will evolve in 1,000 years into giants between 6ft and 7ft tall, he predicts, while life-spans will have extended to 120 years, Dr Curry claims.

Physical appearance, driven by indicators of health, youth and fertility, will improve, he says, while men will exhibit symmetrical facial features, look athletic, and have squarer jaws, deeper voices and bigger penises.

Women, on the other hand, will develop lighter, smooth, hairless skin, large clear eyes, pert breasts, glossy hair, and even features, he adds. Racial differences will be ironed out by interbreeding, producing a uniform race of coffee-coloured people.

{ BBC | Continue reading }

photo { Jackson Eaton | Thanks Bon Jane! }

An ‘immortal’ jellyfish is swarming through the world’s oceans, according to scientists.

Since it is capable of cycling from a mature adult stage to an immature polyp stage and back again, there may be no natural limit to its life span. Scientists say the hydrozoan jellyfish is the only known animal that can repeatedly turn back the hands of time and revert to its polyp state (its first stage of life).

{ Yahoo Green | Continue reading | Telegraph }

photo { Jackson Eaton }

Emails feel so transient, so disembodied, that we’re more tempted to lie when sending them compared with writing with pen and paper. That’s according to Charles Naquin and colleagues who tested the honesty of students and managers as they played financial games.

{ BPS | Continue reading }

Experiments 1-3 demonstrated that exposure to the letter A enhances performance relative to the exposure to the letter F, whereas exposure to the letter F prior to an achievement task can impair performance. This effect was demonstrated using two different types of samples (undergraduate and graduate students), in two different experimental settings (classroom and laboratory), using two different types of achievement tasks (analogy and anagram), and using two different types of letter presentation (Test Bank ID and Subject ID). Results from the funnelled debriefing, self-report goals, and word-stem completion support our position that the effect of letter on academic performance takes place outside the conscious awareness of participants. (…)

Our findings suggest that students are vulnerable to evaluative letters presented before a task, and support years of research highlighting the significant role that nonconscious processes play in achievement settings.

{ The British Psychological Society | Continue reading }

A link between romantic love and face recognition and sexual desire and verbal recognition is suggested. When in love, people typically focus on a long-term perspective which enhances global perception, whereas when experiencing sexual encounters they focus on the present which enhances a perception of details. Because people automatically activate these processing styles when in love or sex, subtle reminders of love versus sex should suffice to change ways of perception. Global processing should further enhance face recognition, whereas local processing should enhance recognition of verbal information. In two studies participants were primed with concepts and thoughts of love versus sex. Compared to control groups, recognition of verbal material was enhanced after sex priming, whereas face recognition was enhanced after love priming. In Experiment 2 it was demonstrated that differences in global versus local perception mediated these effects. However, there was no indication for mood as a mediator.

{ European Journal of Social Psychology }

{ A beam of light is depicted travelling between the Earth and the Moon in the same time it takes light to scale the distance between them: 1.255 seconds at its mean orbital (surface to surface) distance. The relative sizes and separation of the Earth–Moon system are shown to scale. | Wikipedia | Related: Where is the best clock in the universe? The widespread belief that pulsars are the best clocks in the universe is wrong, say physicists. }

Does playing hard to get work?

‘Easy things nobody wants, but what is forbidden is tempting.’ –Ovid

Back in the 60s and 70s, before the sexual revolution had really taken hold, the standard dating advice for women was play hard to get. In some quarters it still is.

Like the Roman poet Ovid 2,000 years earlier, social scientists in the 1960s accepted the cultural lore that women could increase their desirability by being coy. When interviewed, men seemed to agree: they said that hard to get women were probably more popular, beautiful and had better personalities.

Unfortunately every time psychologists used an experiment to test the idea that playing hard to get is a good dating strategy, their results didn’t make any sense. At least not until 1973 when Elaine Walster and colleagues at the University of Wisconsin finally hit upon a method that teased out the subtleties. (…)

So this experiment suggests that playing hard to get only works in the sense that it signals selectivity. But for the person you are after, you should be easy to get because otherwise they’ll assume you’re hard work.

In the light of this experiment we can remix Ovid’s quote to: “Easy things are tempting, but only if they are forbidden to others.”

{ PsyBlog | Continue reading }

illustration { Imp Kerr & Associates, 2010 }

related { Abdi Assadi, Relationship as Yoga 1 & 2 | Podcast | iTunes }

Is the happy life characterized by shallow, happy-go-lucky moments and trivial small talk, or by reflection and profound social encounters? Both notions—the happy ignoramus and the fulfilled deep thinker—exist, but little is known about which interaction style is actually associated with greater happiness (King & Napa, 1998). In this article, we report findings from a naturalistic observation study that investigated whether happy and unhappy people differ in the amount of small talk and substantive conversations they have. (…)

Naturally, our correlational findings are causally ambiguous. On the one hand, well-being may be causally antecedent to having substantive interactions; happy people may be “social attractors” who facilitate deep social encounters (Lucas & Dyrenforth, 2006). On the other hand, deep conversations may actually make people happier. (…)

Remarking on Socrates’ dictum that “the unexamined life is not worth living,” Dennett (1984) wrote, “The overly examined life is nothing to write home about either” (p. 87). Although we hesitate to enter such delicate philosophical disputes, our findings suggest that people find their lives more worth living when examined―at least when examined together.

{ Psychological Science | Continue reading }

collage { never always }

When pain is pleasant

Ever prodded at an injury despite the fact you know it will hurt? Ever cook an incredibly spicy dish even though you know your digestive tract will suffer for it? If the answers are yes, you’re not alone. Pain is ostensibly a negative thing but we’re often drawn to it. Why?

According to Marta Andreatta from the University of Wurzburg, it’s a question of timing. After we experience pain, the lack of it is a relief. Andreatta thinks that if something happens during this pleasurable window immediately after a burst of pain, we come to associate it with the positive experience of pain relief rather than the negative feeling of the pain itself. The catch is that we don’t realise this has happened. We believe that the event, which occurred so closely to a flash of pain, must be a negative one. But our reflexes betray us.

Andreatta’s work builds on previous research with flies and mice. If flies smell a distinctive aroma just before feeling an electric shock, they’ll learn to avoid that smell. However, if the smell is released immediately after the shock, they’re actually drawn to it. Rather than danger, the smell was linked with safety. The same trick works in mice. But what about humans?

{ Discover magazine | Continue reading }

quote { Charles Baudelaire, The Man Who Tortures Himself, 1857 }

When the University of Massachusetts Lowell launched its nanotechnology center six years ago, scientists, engineers, and entrepreneurs were dreaming big dreams about small things, like miniature generators to replace batteries and microscopic robots to repair human tissues.

State officials and economic developers imagined new industries and jobs. Universities jockeyed for billions in research money. The news media hyped it as the next big thing.

So what happened?

A lot, actually. While nanotechnology — working at a scale that is one-thousandth the width of a human hair — may have faded from the public’s imagination, the field has made substantial progress in recent years, opening new frontiers in electronics, medicine, and materials.

Nanotech products have begun to enter commercial markets. Components such as nanoparticles and tiny conductive wires called carbon nanotubes are being standardized and mass-produced. New discoveries are being made. At the Massachusetts Institute of Technology, for example, researchers recently found that carbon nanotubes can not only conduct electricity, but generate it.
“Nanotechnology may have faded from view,’’ said Michael Strano, who led the MIT team that made the discovery, “but it has dissolved into a sea of science.’’

At UMass Lowell, researchers have built working prototypes of sensors with components smaller than a grain of sand, able to detect chemical weapons, biological weapons, and previously undetectable cracks that threaten the integrity of ceramic body armor. They have also developed a process, similar to ink jet printing, to rapidly apply the sensors to soldiers’ equipment. (…)

Nanotechnology is at about the point that IT had reached in 1975, said Roco, but has gotten there much faster. Roco estimates nanotechnology will reach IT’s 1995 stage by 2020.

{ Boston Globe | Continue reading | via Josh Wolfe }

{ A new study suggests that darkness encourages cheating, even when it makes no difference to anonymity. | BPS | full story }

This week, a study found that drinking habits are socially transmissible. Last month, a paper said that both cooperation and selfishness can spread like a virus. In February, a study found that poor sleep and pot smoking are contagious among teens. All of these revelations come from the works of two scientists, Harvard’s Nicholas Christakis and U.C. San Diego’s James Fowler. They first brought fame to contagion in 2007 with a widely publicized paper suggesting that obesity is “socially contagious” and that it can spread like a pox from one friend to another, and then another, and then to one more. More contagions (depression and divorce) are in the works. In their 2009 book, Connected: The Surprising Power of Our Social Networks and How They Shape Our Lives, Christakis and Fowler write that connection and contagion are “the anatomy and physiology of the human superorganism,” and that “everything we think, feel, do, or say can spread far beyond the people we know.”

The studies have provoked excitement in the public health community but also some head-scratching. Many were surprised by the claim that obesity, for example, could be transmitted from one person to another. We thought we knew the major causes of fatness: genes, for one thing, along with eating too many calories and living a sedentary lifestyle. The finding that loneliness can be contagious also caught some readers off-guard

{ Slate | Continue reading }

photo { Bryan Formhals }

Deciding what is and isn’t a planet is a problem on which the International Astronomical Union has generated a large amount of hot air. The challenge is to find a way of defining a planet that does not depend on arbitrary rules. For example, saying that bodies bigger than a certain arbitrary size are planets but smaller ones are not will not do. The problem is that non-arbitrary rules are hard to come by.

In 2006, the IAU famously modified its definition of a planet in a way that demoted Pluto to a second class member of the Solar System. Pluto is no longer a full blown planet but a dwarf planet along with a handful of other objects orbiting the Sun.

The IAU’s new definition of a planet isan object that satisfies the following three criteria. It must be in orbit around the Sun, have sufficient mass to have formed into a nearly round shape and it must have cleared its orbit of other objects.

Pluto satisfies the first two criteria but fails on the third because it crosses Neptune’s orbit(although, strangely, Neptune passes).

Such objects are officially called dwarf planets and their definition is decidedly arbitrary. In its infinite wisdom, the IAU states that dwarf planets are any transNeptunian objects with an absolute magnitude less than +1 (ie a radius of at least 420 km).

Today, Charles Lineweaver and Marc Norman at the Australian National University in Canberra focus on a new way of defining dwarf planets which is set to dramatically change the way we think about these obects.

The problem boils down to separating the potato-shaped objects in the Solar System from the spherical ones.

{ The Physics arXiv Blog | Continue reading }

photo { Max Langhurst }

Black holes may constitute all dark matter

Dark matter is the mysterious stuff that cosmologists believe fills our Universe. The evidence for its existence is that there is not enough visible mass to hold galaxies together. But since galaxies manifestly do not fly apart, there must be some invisible stuff, some missing mass, that generates the gravitational forces holding them together.

But there’s a problem with this idea. Two of them actually. First, physicists’ best guess at the laws of physics give a good description of all of the particles they’ve discovered so far and a few they expect to discover soon. The trouble is that none of these particles have the right kind of properties to be dark matter ie electrically neutral, long-lived and slow moving. But none of the known or reasonably hypothesised particles fits the bill. To make room for a dark matter particle, the laws of physics have to be changed in ways that many theorists feel uncomfortable with.

Second, despite a decade spent searching for dark matter with experiments costing tens of millions of dollars, nobody has laid eyes on the stuff. Most physicists think these experiments have found nothing: zip, zilch, zero.

{ The Physics arXiv Blog | Continue reading }

photo { Nick Waplington, S-M Club Ceiling, 2004 }