People are often the most aggressive against the people to whom they are closest—intimate partners. Intimate partner violence might be partly a result of poor self-control. Self-control of aggressive impulses requires energy, and much of this energy is provided by glucose derived from the food we eat. We measured glucose levels in 107 married couples over 21 days. To measure aggressive impulses, participants stuck 0–51 pins into a voodoo doll that represented their spouse each night, depending how angry they were with their spouse. To measure aggression, participants blasted their spouse with loud noise through headphones. Participants who had lower glucose levels stuck more pins into the voodoo doll and blasted their spouse with louder and longer noise blasts.

{ PNAS | PDF }

art { Sergei Eisenstein. Untitled, c. 1931 }

The ability to choose should let people create more enjoyable experiences. However, in a set of 5 studies, people who chose repeatedly during ongoing consumption exhibited a greater drop in enjoyment compared with those who received a series of random selections from the same set of liked stimuli.

{ American Psychology Association | Continue reading }

related { This questionnaire was designed to test your ability to choose at random }

When you’re doing two things at once – like listening to the radio while driving – your brain organizes itself into two, functionally independent networks, almost as if you temporarily have two brains. That’s according to a fascinating new study from University of Wisconsin-Madison neuroscientists Shuntaro Sasai and colleagues.

{ Neuroskeptic | Continue reading }

art { Harri Peccinotti }

Remembering the past is a complex phenomenon that is subject to error. The malleable nature of human memory has led some researchers to argue that our memory systems are not oriented towards flawlessly preserving our past experiences. Indeed, many researchers now agree that remembering is, to some degree, reconstructive. Current theories propose that our capacity to flexibly recombine remembered information from multiple sources – such as distributed memory records, inferences, and expectations – helps us to solve current problems and anticipate future events. One implication of having a reconstructive and flexible memory system is that people can develop rich and coherent autobiographical memories of entire events that never happened.

In this article, we revisit questions about the conditions under which participants in studies of false autobiographical memory come to believe in and remember fictitious childhood experiences. […]

Approximately one-third of participants showed evidence of a false memory, and more than half showed evidence of believing that the [fictitious] event occurred in the past.

{ Memory | Continue reading }

Photo photo { Brooke Nipar }

In a mixed-gender group, when women talk 25% of the time or less, it’s seen as being “equally balanced”. If women talk 25–50% of the time, they’re seen as “dominating the conversation”

[…]

A Californian company called Skinny Mirror sells mirrors that make you look thinner. When installed in the changing rooms of clothes shops, they can increase sales by 18%.

[…]

Twitter has enough money in the bank to run for 412 years with current losses.

{ Fluxx | Continue reading }

photo { Blaise Cepis }

Most people strongly believe they are just, virtuous, and moral; yet regard the average person as distinctly less so. This invites accusations of irrationality in moral judgment and perception — but direct evidence of irrationality is absent. Here, we quantify this irrationality and compare it against the irrationality in other domains of positive self-evaluation. […]

Virtually all individuals irrationally inflated their moral qualities […] Irrational moral superiority was not associated with self-esteem. Taken together, these findings suggest that moral superiority is a uniquely strong and prevalent form of “positive illusion,” but the underlying function remains unknown.

{ Social Psychological and Personality Science | Continue reading }

photo { Weegee, Empire State Building Distortion, 1955 }

The idea behind power poses, that if you stand in a “powerful” position, broad posture, hands on hips, shoulders high and pushed back, you will suddenly feel psychologically and physiologically stronger, is intuitively appealing, especially for people without much confidence. The problem is that it’s simply not true, according to University of Pennsylvania researchers. […]

“We did find that […] if you’re a loser and you take a winner or high power pose, your testosterone decreases.”

In other words, Smith said, “people might not be able to ‘fake it until they make it,’ and in fact it might be detrimental.”

{ EurekAlert | Continue reading }

The Dress photograph, first displayed on the internet in 2015, revealed stunning individual differences in color perception. The aim of this study was to investigate if lay-persons believed that the question about The Dress colors was answerable. Past research has found that optimism is related to judgments of how answerable knowledge questions with controversial answers are. Furthermore, familiarity with a question can create a feeling of knowing the answer.

Building on these findings, 186 participants saw the photo of The Dress and were asked about the correct answer to the question about The Dress’ colors (“blue and black,” “white and gold,” “other, namely…,” or “there is no correct answer”). Choice of the alternative “there is no correct answer” was interpreted as believing the question was not answerable. This answer was chosen more often by optimists and by people who reported they had not seen The Dress before.

{ Frontiers Psychology | Continue reading }

photo { Gregory Halpern }

When one draws a correlation between body mass and brain mass for living primates and extinct species of Homo, it is not humans—whose brains are three times larger than those of chimpanzees, their closest primate relative—that are an outlier. Instead, it is the great apes—gorillas and the orangutan—with brains far smaller than would be expected in relation to their body mass. We are the new normal in evolution while the great apes are the evolutionary oddity that requires explanation.

But we remain special in another way. Our 86 billion neurons need so much energy that if we shared a way of life with other primates we couldn’t possibly survive: there would be insufficient hours in the day to feed our hungry brain. It needs 500 calories a day to function, which is 25 percent of what our entire body requires.

{ New York Review of Books | Continue reading }

art { Christopher Wool, Untitled, 2006 }

Size has been one of the most popular themes in monster movies, especially those from the 1950s. The premise is invariably to take something out of its usual context–make people small or something else (gorillas, grasshoppers, amoebae, etc.) large–and then play with the consequences. However, Hollywood’s approach to the concept has been, from a biologist’s perspective, hopelessly naïve. Absolute size cannot be treated in isolation; size per se affects almost every aspect of an organism’s biology. Indeed, the effects of size on biology are sufficiently pervasive and the study of these effects sufficiently rich in biological insight that the field has earned a name of its own: “scaling.” […]

Take any object–a sphere, a cube, a humanoid shape. […] If you change the size of this object but keep its shape (i.e., relative linear proportions) constant, something curious happens. Let’s say that you increase the length by a factor of two. Areas are proportional to length squared, but the new length is twice the old, so the new area is proportional to the square of twice the old length: i.e., the new area is not twice the old area, but four times the old area (2L x 2L).

Similarly, volumes are proportional to length cubed, so the new volume is not twice the old, but two cubed or eight times the old volume (2L x 2L x 2L). As “size” changes, volumes change faster than areas, and areas change faster than linear dimensions.

[…]

In The Incredible Shrinking Man (1957), the hero is exposed to radioactive toxic waste and finds himself growing smaller and smaller. When he stops shrinking, he is about an inch tall, down by a factor of about 70 in linear dimensions. Thus, the surface area of his body, through which he loses heat, has decreased by a factor of 70 x 70 or about 5,000 times, but the mass of his body, which generates the heat, has decreased by 70 x 70 x 70 or 350,000 times. He’s clearly going to have a hard time maintaining his body temperature (even though his clothes are now conveniently shrinking with him) unless his metabolic rate increases drastically.

Luckily, his lung area has only decreased by 5,000-fold, so he can get the relatively larger supply of oxygen he needs, but he’s going to have to supply his body with much more fuel; like a shrew, he’ll probably have to eat his own weight daily just to stay alive. He’ll also have to give up sleeping and eat 24 hours a day or risk starving before he wakes up in the morning (unless he can learn the trick used by hummingbirds of lowering their body temperatures while they sleep).

Because of these relatively larger surface areas, he’ll be losing water at a proportionally larger rate, so he’ll have to drink a lot, too.

{ Fathom Archive | Continue reading }

art { Agnes Martin, Untitled, 1960 }

more { Delusional misidentification syndromes have fascinated filmmakers and psychiatrists alike }

{ Unskilled and unaware of it: How difficulties in recognizing one’s own incompetence lead to inflated self-assessments | PDF }

Why Scientific Studies Are So Often Wrong: The Streetlight Effect

Researchers tend to look for answers where the looking is good, rather than where the answers are likely to be hiding.

{ Discover | Continue reading }

Revisiting Depression Contagion […] A Speed-Dating Study.

After four minutes of interaction with partners with high levels of depressive symptoms, participants did not experience increased negative affect; instead, they experienced reduced positive affect, which led to the rejection of these partners.

{ Clinical Psychological Science | Continue reading }

Many laboratory experiments show that people are often altruistic or care for fairness. We present data that reveal a darker side of human nature. We introduce the joy-of-destruction game. Two players each receive an endowment and simultaneously decide on how much of the other player’s endowment to destroy. Subjects play this game repeatedly. In one treatment, subjects can hide their destruction behind random destruction. In this treatment, money is destroyed in almost 40% of all decisions. We attribute this behavior to a visceral pleasure of being nasty. Under full information destruction is also observed, but rare. In this treatment, acts of destruction are followed by immediate retaliation.

{ Faculty of Economics and Management Magdeburg | PDF }

Is our perceptual experience a veridical representation of the world or is it a product of our beliefs and past experiences? Cognitive penetration describes the influence of higher level cognitive factors on perceptual experience and has been a debated topic in philosophy of mind and cognitive science.

{ Consciousness and Cognition | Continue reading }

photo { Can you think a thought which isn’t yours? A remarkable new study suggests you can }

We found that women experience more jealousy toward women with cosmetics, and view these women as more attractive to men and more promiscuous.

{ Perception | Continue reading }

photo { Bon Jane }

The publication of Richard Krafft-Ebbing’s masterwork Psychopathia Sexualis in 1886 represented a landmark in thinking about human sexuality and the bizarre forms that it can take. In addition to describing different types of sexual expression that the author regarded as “perverse” (usually any form of sex that didn’t lead to procreation), it quickly became one of the most influential books on human sexuality ever written and introduced numerous new terms into common usage. One of these terms was “masochism,” which Krafft-Ebbing defined as the opposite of sadism (which he also coined). While the later is the desire to cause pain and use force, the former is the wish to suffer pain and be subjected to force.  

one person in particular who was less than pleased with the new term was the Austrian author, Leopold von Sacher-Masoch. Krafft-Ebbing justified naming this new sexual anomaly after the prominent author whom he described as “the poet of Masochism” due to his erotic writings and because of his own eccentric personal life. […]

Venus in Furs, the short novel for which Sacher-Masoch is best known, was published in 1870, and has become an erotic classic in its own right. In this book, the hero Severin asks to be treated as a slave and to be abused by Wanda (the “Venus in furs” of the story). The fact that Sacher-Masoch often acted out these fantasies in real-life with his wives and mistresses was not well-known. […]

It may be a coincidence that his health went into a decline shortly after Psychopathia Sexualis came out but by March of 1895, he was delusional and violent. After attempting to kill his then-wife Hulda, she arranged for him to be discreetly moved to an asylum in Lindheim, Hesse. Although his official obituary states that he died that year, there are claims that Sacher-Masoch lived on as an anonymous asylum inmate and actually died years later.

{ Providentia | Continue reading }

With tens or even hundreds of billions of potentially habitable planets within our galaxy, the question becomes: are we alone?

Many scientists and commentators equate “more planets” with “more E.T.s”. However, the violence and instability of the early formation and evolution of rocky planets suggests that most aliens will be extinct fossil microbes.

Just as dead dinosaurs don’t walk, talk or breathe, microbes that have been fossilised for billions of years are not easy to detect by the remote sampling of exoplanetary atmospheres.

In research published [PDF] in the journal Astrobiology, we argue that early extinction could be the cosmic default for life in the universe. This is because the earliest habitable conditions may be unstable. […] Inhabited planets may be rare in the universe, not because emergent life is rare, but because habitable environments are difficult to maintain during the first billion years.

Our suggestion that the universe is filled with dead aliens might disappoint some, but the universe is under no obligation to prevent disappointment.

{ The Conversation | Continue reading }

previously { Where is the Great Filter? Behind us, or not behind us? If the filter is in our past, there must be some extremely improbable step in the sequence of events whereby an Earth-like planet gives rise to an intelligent species comparable in its technological sophistication to our contemporary human civilization. }

still { The Day the Earth Stood Still, 1951 }

The present study investigated whether gut feelings — commonly reported visceral sensations that are virtually synonymous with intuitive hunches — may involve information gained by nonordinary means.

[…]

Objective: Investigate whether the gut feelings of one person, as measured with an electrogastrogram (EGG), respond to the emotions of a distant person.

[…]

This experiment suggests that some somatic feelings may be associated with perceptions transcending ordinary sensory capabilities. Of course, it would be imprudent to assume that all gut feelings necessarily contain intuitive information, as on occasion visceral sensations reflect little more than a bad burrito. But assuming that future studies can successfully replicate the present results, it may turn out that the “belly brain” is more perceptive than previously suspected, and that common reports of gut feelings having special intuitive qualities may have a basis in fact.

{ The Journal of Alternative and Complementary Medecine | PDF }

image { thanks Tim }

Scientists in the United States are trying to grow human organs inside pigs.

They have injected human stem cells into pig embryos to produce human-pig embryos known as chimeras.

The embryos are part of research aimed at overcoming the worldwide shortage of transplant organs.

The team from University of California, Davis says they should look and behave like normal pigs except that one organ will be composed of human cells.

{ BBC | Continue reading }

photos { Christien Meindertsma, PIG 05049, 2009 | Meindertsma has spent three years researching all the products made from a single pig }