Highlighting recently published papers selected by Academy members Journal Club: Ancient pottery harbors 5, year-old beer recipe Posted on May 23, by Megan Scudellari Funnel for beer making from Mijiaya. Image courtesy of Jiajing Wang. Fermented beverages have long been a part of social and religious rituals. Now, researchers have identified a beer-making toolkit at an archaeological site in northern China with a 5, year-old recipe for beer. Ancient pottery vessels, dating to BC, contained a fermented mixture of barley, broomcorn millets, and other starchy plants. It is the earliest direct evidence of beer brewing in ancient China, the authors say.
Study: Simple Life Forms are Common throughout Universe
Share 28 shares The test involved a challenge where a pair of animals of the same species a conspecific dyad could only obtain food if they both pulled each different end of the same rope simultaneously. Regardless of whether the animals had prior training on the apparatus, the wolves outperformed the dogs on average, with the dog pairs only succeeding two of trials, and the wolf pairs succeeding at of trials. The groups are composed of between two and six individuals.
Overall, researchers at the University of Veterinary Science in Vienna tested 12 wolves 8 male, 4 female and 14 dogs 7 male, 7 female:
In a new study published in the journal Science Advances, Elizabeth Bruch, associate professor of complex systems and sociology at the University of Michigan, and her colleagues surveyed , heterosexual users on a “popular, free online dating service” (which could not be named due to an NDA) in New York, Chicago, Seattle, and Boston.
Are callous unemotional traits all in the eyes? Journal of Child Psychology and Psychiatry, 52 3 , Moral judgment and psychopathy. Emotion Review, 3 3 , The neurobiology of psychopathic traits in youths. Nature Reviews Neuroscience, 14, Cognitive and neural dysfunction. Dialogues in Clinical Neuroscience, 15 2 , Emotion-based learning systems and the development of morality. Deafness to fear in boys with psychopathic tendencies. Journal of Child Psychology and Psychiatry, 46 3 , Expressive recognition and behavioural problems in early adolescence.
Cognitive Development, 15,
Out of your league? Study shows most online daters seek more desirable mates
Resplendence The natural complement to science in reflowering the Tree of Life. Entheogens, the Conscious Brain and Existential Reality A state of the art research overview of what is currently known about how entheogens affect the brain and to explore their implications for understanding the conscious brain and its relationship to existential reality.
Reproductive Technology and Germ-Line Engineering: The Comprehensive Tree Linked in figure 1 is a high-resolution image of the evolutionary tree of life, from viruses through bacteria and archaea to protista, plants, animals and fungi, with a selection of representative species illustrated.
A detailed analysis of 3. William Schopf from the University of California, Los Angeles, and his colleagues analyzed 11 specimens of 5 species of prokaryotic cellular microfossils from the Apex Basalt Formation, Pilbara Craton, Western Australia. Two of the five species the researchers studied were primitive photosynthesizers, one was an Archaeal methane producer, and two others were methane consumers.
The study , published in the Proceedings of the National Academy of Sciences, is the most detailed ever conducted on microorganisms preserved in such ancient fossils. But, if the conditions are right, it looks like life in the Universe should be widespread. Professor Schopf and co-authors analyzed the Apex specimens with cutting-edge technology called secondary ion mass spectroscopy SIMS , which reveals the ratio of carbon to carbon isotopes — information scientists can use to determine how the microorganisms lived.
They used a secondary ion mass spectrometer — one of just a few in the world — to separate the carbon from each fossil into its constituent isotopes and determine their ratios. Primitive photosynthesizers are fairly rare on Earth today because they exist only in places where there is light but no oxygen — normally there is abundant oxygen anywhere there is light. And the existence of the rocks the team analyzed is also rather remarkable.
The rocks we studied are about as far back as rocks go. William Schopf et al. SIMS analyses of the oldest known assemblage of microfossils document their taxon-correlated carbon isotope compositions.
Study of Online Dating Confirms That Dating is Bad
Map of early diversification of modern humans according to mitochondrial population genetics see: The first lineage to branch off from Mitochondrial Eve is L0. It is also found among the Mbuti people. The macro haplogroups M and N , which are the lineages of the rest of the world outside Africa, descend from L3. L3 is about 84, years old and haplogroup M and N are about 63, years old.
A frustrating new study shows that for online daters, women peak at age 18, while men peak at age Read the full details of the study here.
While earlier studies had also shown that fathers have lower testosterone levels than men of the same age without children, it has not been clear if men with low testosterone are more likely to become fathers or if fatherhood actually suppresses levels of the male sex hormone. The new research suggests that the latter is the case. Researchers say the findings show that unlike most other mammals, human males are biologically hardwired for parenthood.
The men were enrolled in a health and nutrition study. Their testosterone levels were measured at the beginning and end of the study. All of the men were single and had no children when they enrolled in the study. But about a third entered into stable relationships and became first-time fathers during the follow-up. While the single men with higher testosterone levels at the beginning of the study were more likely to find partners and become fathers, new fathers experienced a drop in levels of the sex hormone greater than drops seen in men of the same age without children over the study period.
Among the fathers in the study, those who were the most involved in the care of their children had lower testosterone than those who were not so involved. So while testosterone may help men find mates and produce offspring, high levels of the male sex hormone may not be needed and may even be detrimental to caring for a child, the researchers say. Gray, PhD, who has also studied the impact of fatherhood on testosterone levels, tells WebMD that the human paternal caregiving role appears to be a relatively recent evolutionary trait.
High testosterone has been linked to aggression, as well as to a possible increased risk for prostate and testicular cancer , stroke , heart disease , and even memory decline, Gray says. Gettler, department of anthropology, Northwestern University, Chicago.
Obesity slowing life span gains in United States
But a new study suggests America’s increasing girth is what’s really behind the slowdown. Excess weight led to nearly , excess deaths in And overall, those extra pounds reduced life expectancy by almost one year at age 40, researchers determined. Preston is a professor of sociology at the University of Pennsylvania.
Aug 09, · In the realm of online dating, folks are aiming high when it comes to potential partners. A study from Science Advance found that both men and .
Share this article Share The results showed that while women’s opinions were influenced by a variety of physical features – tall and broad-shouldered men tended to be favoured over shorter men with bigger waistlines – the size of a man’s penis reigned supreme in the attractiveness stakes. The findings contradict previous studies suggesting that the size of male genitalia was of no importance to women. While researchers were unable to find the perfect penis size, proportion is crucial, they say.
In what may come as a relief to many men, manhood must not be so large that it appears out of proportion to the rest of his body. The researchers also believe that the female preference for a larger penis may have influenced the evolution of its shape and size today, The long and short of it: Women shown a variety of computer-generated men said penis size was the most important trait They said: They show that female mate choice could have played a role in the evolution of the relatively large human male penis.
The Canadian study comes after another investigation carried out by the University of the West of Scotland found that a larger than average penis is more likely to bring women to orgasm. In the Scottish study, an average length penis was defined as being 5. Share or comment on this article Most watched News videos.
In the game of online dating, men and women try to level up, study finds
Anti-miscegenation laws Laws banning “race-mixing” were enforced in certain U. All these laws primarily banned marriage between persons of different racially or ethnically defined groups, which was termed “amalgamation” or “miscegenation” in the U. The laws in Nazi Germany and laws in many U.
University of Wisconsin-Madison Could there be too many fish in the sea? When it comes to online dating, that might be the case, according to researchers at the University of Wisconsin—Madison. Jonathan D’Angelo, doctoral candidate in Communication Science, and Catalina Toma, assistant professor in the Department of Communication Arts, recently had their findings published in the print edition of Media Psychology. What they found was that a week after making their selection, online daters who chose from a large set of potential partners i.
Those who selected from a large pool and had the ability to reverse their choice were the least satisfied with their selected partner after one week. It’s a bit of choice overload, a theory economists use when talking about people buying products such as chocolate or pens. With relationships, the stakes — and the potential regret — are higher. Researchers point to the role of counterfactual thinking: Having more choices allows people to generate counterfactuals, or evaluative thoughts about the merits of the discarded alternatives i.
And that’s when people head back online.
Online dating study shows too many choices can lead to dissatisfaction
Seems easy enough, but no amount of efficiency can make up for the lack of communication that will likely exist between you and your screen-peering partner. Perhaps you may think that the odds of meeting someone with a sexually transmitted disease or infection are slim, or that a condom is enough for one night of passion, but the reality is different. The United States has the highest rate of STDs, studies show, in comparison to other countries, with adolescents having the greatest risk of contracting a sexually transmitted infection.
Sixty-two percent of those individuals are under the age of 25, and, in a report by the Pew Research Center , the share of college-aged individuals who use online dating has increased from 10 percent in to 27 percent in You might also like: The CDC is a great website that can inform you on all the possible consequences of careless sex practices, such as having sex without a condom, drinking prior to having sex or—the big one—having unprotected sex with someone you just met online.
A new research study observes the use of “scientific” research in order to give weight to online dating services that offer to find the perfect soulmate for users.
We drew you a flowchart to work it out Match. A new wave of dating websites, such as OKCupid, emerged in the early s. And the arrival of Tinder changed dating even further. Today, more than one-third of marriages start online. Clearly, these sites have had a huge impact on dating behavior. But now the first evidence is emerging that their effect is much more profound. The way people meet their partners has changed dramatically in recent years For more than 50 years, researchers have studied the nature of the networks that link people to each other.
These social networks turn out to have a peculiar property. One obvious type of network links each node with its nearest neighbors, in a pattern like a chess board or chicken wire. Another obvious kind of network links nodes at random. But real social networks are not like either of these.
Recent African origin of modern humans
Search Share A study of online dating finds that the early stages of courting are all about “deal breakers. Are you carefully weighing every factor that makes someone a good romantic match? Not according to a study of more than 1 million interactions on a dating website published this week in the Proceedings of the National Academy of Sciences. Instead, the results indicate that you are probably looking for “deal breakers,” harshly eliminating those who do not live up to your standards.
Not long ago, dating produced no data at all.
Very interesting the notion that both ANI ASI diverged 60kya! They have also deleted the previous notion of the mixes cotiming with the putative indo-european theory probably the result of adding another years;-) however, both of them are a set-back for the academic lovers.
I am very skeptic about the hypothesis that the first name messes up your life in Germany. Using first names is in Germany, still, reserved for people who know each other well friends, family members. Given names are far too personal. This was a lesson that my German instructor drilled into our heads so that we would not seem impolite should we visit Germany. In south or north of Germany Ossi and Wessi was never a point of discussion.
Giwimu A quick note from Germany:
A new study shows that female online daters peak at age 18, and we’ll swipe left on that
A recent online dating study says: We also find that the probability of receiving a response to an advance drops markedly with increasing difference in desirability between the pursuer and the pursued. Yes, they did some analytics mojo to come up with that number based on the number of responses someone gets and the number of initial contacts someone gets.
continues to redefine the way single men and single women meet, flirt, date and fall in love, proving time and again that you can make love happen through online dating and that lasting relationships are possible.
Online Dating Social Networking Online Community Dating Matchmaking Increasingly, human interactions are being communicated by means of electronic, Internet-based medias. Readily available programs and websites facilitate easy transference of messages, thus rendering space and time irrelevant. The quick, efficient manner of Internet-based medias allow for easy access to users who want to examine a lot of content in an organized format within a short amount of time.
This concept is ideal for facilitating online dating networks where users seek to explore many users with the same intimate-based goals for using the community. Online dating communities are a growing industry, like social networking sites, and are similar in that they both provide interpersonal communication with others over the Internet. In contrast to social networking sites, online dating communities are tailored specifically to users who are looking for a romantic partner, connection, or encounter.
The experience a user has is based upon their reasons for participating, the level of their involvement in the community, and the qualities the community offers to its users. Why do users join and participate in online dating communities? As for delimitations, I will focus specifically on the free online dating community, Plenty of Fish, and users who are aged living in Ottawa, Ontario.
This age group was selected with the anticipation that participants would be out of school and beginning careers. At this stage in life, individuals tend to lack the social outlets generally used to meet potential partners. That is to say, they are freshly out of school, new to their careers and are frequenting bars and other social functions less than they once were.
Concerning limitations, this pilot study provides only a micro example of the experience of an online dating community.