Group items matching

in title, tags, annotations or url

"In the past few weeks, the blogosphere has been abuzz about the dangers of non-replication and the "decline" effect, triggered by Jonah Lehrer's interesting piece in the New Yorker (mostly behind a firewall). The central claim in the piece is that initially strong or provocative findings diminish in strength over time. The decline might well come from more stringent methodology or better experimental controls rather than via mysterious forces, but that's not what concerns me today. My concern is about media reporting and even blogging about new and provocative scientific findings, the very findings that tend to decline. Following a murder, the arrest of a suspect is broadcast on the front pages, but when that suspect is exonerated, the correction ends up on the back of the local section months later (if it appears at all). The same problem holds for flawed scientific claims. The thoroughly debunked Mozart Effect still receives media coverage, just as other unsupported findings remain part of the popular consciousness despite a lack of replicability."

"IN a great many fields, researchers would give their eyeteeth to have a direct glimpse of the past. Instead, they generally have to piece together remote conditions using remnants like weathered fossils, decaying parchments or mummified remains. Cosmology, the study of the origin and evolution of the universe, is different. It is the one arena in which we can actually witness history. Enlarge This Image Brendan Monroe The pinpoints of starlight we see with the naked eye are photons that have been streaming toward us for a few years or a few thousand. The light from more distant objects, captured by powerful telescopes, has been traveling toward us far longer than that, sometimes for billions of years. When we look at such ancient light, we are seeing - literally - ancient times. "

"In the beauty and geometric complexity of tile mosaics on walls of medieval Islamic buildings, scientists have recognized patterns suggesting that the designers had made a conceptual breakthrough in mathematics beginning as early as the 13th century. A new study shows that the Islamic pattern-making process, far more intricate than the laying of one's bathroom floor, appears to have involved an advanced math of quasi crystals, which was not understood by modern scientists until three decades ago. The findings, reported in the current issue of the journal Science, are a reminder of the sophistication of art, architecture and science long ago in the Islamic culture. They also challenge the assumption that the designers somehow created these elaborate patterns with only a ruler and a compass. Instead, experts say, they may have had other tools and concepts."

"It was identified by Jonathan Haidt, a social psychologist at the University of Virginia who studies the intuitive foundations of morality and ideology. He polled his audience at the San Antonio Convention Center, starting by asking how many considered themselves politically liberal. A sea of hands appeared, and Dr. Haidt estimated that liberals made up 80 percent of the 1,000 psychologists in the ballroom. When he asked for centrists and libertarians, he spotted fewer than three dozen hands. And then, when he asked for conservatives, he counted a grand total of three. "This is a statistically impossible lack of diversity," Dr. Haidt concluded, noting polls showing that 40 percent of Americans are conservative and 20 percent are liberal. In his speech and in an interview, Dr. Haidt argued that social psychologists are a "tribal-moral community" united by "sacred values" that hinder research and damage their credibility - and blind them to the hostile climate they've created for non-liberals. "Anywhere in the world that social psychologists see women or minorities underrepresented by a factor of two or three, our minds jump to discrimination as the explanation," said Dr. Haidt, who called himself a longtime liberal turned centrist. "But when we find out that conservatives are underrepresented among us by a factor of more than 100, suddenly everyone finds it quite easy to generate alternate explanations." "

"The 21-year-old woman was carefully trained not to flirt with anyone who came into the laboratory over the course of several months. She kept eye contact and conversation to a minimum. She never used makeup or perfume, kept her hair in a simple ponytail, and always wore jeans and a plain T-shirt. Each of the young men thought she was simply a fellow student at Florida State University participating in the experiment, which ostensibly consisted of her and the man assembling a puzzle of Lego blocks. But the real experiment came later, when each man rated her attractiveness. Previous research had shown that a woman at the fertile stage of her menstrual cycle seems more attractive, and that same effect was observed here - but only when this woman was rated by a man who wasn't already involved with someone else. The other guys, the ones in romantic relationships, rated her as significantly less attractive when she was at the peak stage of fertility, presumably because at some level they sensed she then posed the greatest threat to their long-term relationships. To avoid being enticed to stray, they apparently told themselves she wasn't all that hot anyway. This experiment was part of a new trend in evolutionary psychology to study "relationship maintenance." Earlier research emphasized how evolution primed us to meet and mate: how men and women choose partners by looking for cues like facial symmetry, body shape, social status and resources. "

"IT has been more than three years since the beginning of the Wall Street financial crisis, yet we continue to hear about new evidence of glaring errors and widespread misdoings. Even the smartest minds in finance are left scratching their heads: how did we not catch any of this sooner? When I hear this refrain, I am reminded of Boris Goldovsky. Goldovsky, who died in 2001, was a legend in opera circles, best remembered for his commentary during the Saturday matinee radio broadcasts of the Metropolitan Opera. But he was also a piano teacher. And it is as a teacher that he made a lasting - albeit unintentional - contribution to our understanding of why seemingly obvious errors go undetected for so long. One day, a student of his was practicing a piece by Brahms when Goldovsky heard something wrong. He stopped her and told her to fix her mistake. The student looked confused; she said she had played the notes as they were written. Goldovsky looked at the music and, to his surprise, the girl had indeed played the printed notes correctly - but there was an apparent misprint in the music. At first, the student and the teacher thought this misprint was confined to their edition of the sheet music alone. But further checking revealed that all other editions contained the same incorrect note. Why, wondered Goldovsky, had no one - the composer, the publisher, the proofreader, scores of accomplished pianists - noticed the error? How could so many experts have missed something that was so obvious to a novice? This paradox intrigued Goldovsky. So over the years he gave the piece to a number of musicians who were skilled sight readers of music - which is to say they had the ability to play from a printed score for the first time without practicing. He told them there was a misprint somewhere in the score, and asked them to find it. He allowed them to play the piece as many times as they liked and in any way that they liked. But not one musician ever found the err

"When reports emerged 30 years ago that young gay men were suffering from rare forms of pneumonia and cancer, public health investigators scrambled to understand what appeared to be a deadly immune disorder: What were the symptoms? Who was most susceptible? What kinds of infections were markers of the disease? They were seeking the epidemiologist's most essential tool - an accurate case definition, a set of criteria that simultaneously include people with the illness and exclude those without it. With AIDS, investigators soon recognized that injection-drug users, hemophiliacs and other demographic groups were also at risk, and the case definition evolved over time to incorporate lab evidence of immune dysfunction and other refinements based on scientific advances. "If you recognize something is happening, you need a case definition so you can count it," said Andrew Moss, an emeritus professor of epidemiology at the University of California, San Francisco, and an early AIDS investigator. "You need to know whether the numbers are going up or down, or whether treatment and prevention work. And if you have a bad case definition, then it's very difficult to figure out what's going on." Once a disease can be diagnosed reliably through lab tests, creating an accurate case definition becomes easier. But when an ailment has no known cause and its symptoms are subjective - as with chronic fatigue syndrome, fibromyalgia and other diseases whose characteristics and even existence have been contested - competing case definitions are almost inevitable. Now a new study of chronic fatigue syndrome has highlighted how competing case definitions can lead to an epidemiologic "Rashomon" - what you see depends on who's doing the looking - and has stoked a fierce debate among researchers and patient advocates on both sides of the Atlantic. "

"You'd think that with all their Googling to find the Spark Notes of the novels they didn't read, today's students would understand how the search engine works. Wrong: They are completely clueless! In a detailed study of 30 college students by anthropologists at Illinois Wesleyan, only seven were able to do a "reasonably well-executed search." According to Inside Higher Ed: They were basically clueless about the logic underlying how the search engine organizes and displays its results. Consequently, the students did not know how to build a search that would return good sources. (For instance, limiting a search to news articles, or querying specific databases such as Google Book Search or Google Scholar.) Duke and Asher said they were surprised by "the extent to which students appeared to lack even some of the most basic information literacy skills that we assumed they would have mastered in high school." Even students who were high achievers in high school suffered from these deficiencies, Asher told Inside Higher Ed in an interview."

"People can talk. Other animals can't. They can all communicate in one way or another--to lure mates, at the very least--but their whinnies and wiggles don't do the jobs that language does. The birds and beasts can use their signals to attract, threaten, or alert each other, but they can't ask questions, strike bargains, tell stories, or lay out a plan of action. Those skills make Homo sapiens a uniquely successful, powerful and dangerous mammal. Other creatures' signals carry only a few limited kinds of information about what's happening at the moment, but language lets us tell each other in limitless detail about what used to be or will be or might be. Language lets us get vast numbers of big, smart fellow primates all working together on a single task--building the Great Wall of China or fighting World War II or flying to the moon. It lets us construct and communicate the gorgeous fantasies of literature and the profound fables of myth. It lets us cheat death by pouring out our knowledge, dreams and memories into younger people's minds. And it does powerful things for us inside our own minds, because we do a lot of our thinking by talking silently to ourselves. Without language, we would be only a sort of upright chimpanzee with funny feet and clever hands. With it, we are the self-possessed masters of the planet. How did such a marvelous adaptation get started? And if it's so great, why hasn't another species come up with something similar? These may be the most important questions we face in studying human evolution. They are also some of the least understood. But in the past few years, linguists and anthropologists have been making some breakthroughs, and we are now beginning to have a glimmering of some answers."

"MR. HOFFMAN: Konzi is a Benobo, a pygmy chimpanzee. He and his sister, Pambinisha, are the subjects of Doctor Sue Savage Rumbaugh's work. That work is questioning the widely accepted view that only humans are capable of language. For 20 years, she's been studying whether Benobos can learn language, working first with their mother, Matata, back in 1975. SUE SAVAGE-RUMBAUGH, Georgia State University: We were trying to do some very simple things like hold up an apple and teach Matata to hit the symbol for apple, and then we would give her an apple. She learned that. What we wanted then to be able to do was to have her use the symbol for apple whenever she was talking about an apple, whether she was intending to eat it or not, to know in a sense that the symbol represented apple, not just the fact that she was going to get apple. This, she couldn't learn, but fortunately, she had a youngster named Konzi, who was around and was playing while I was trying to teach her, and Konzi did learn, even though we weren't trying to teach him. What we found with Konzi was that simply by watching what we did with his mother, he was able to make this correlation so that he knew that the symbol apple represented apple, whether he got to eat one, whether his mother got to eat one, whether we were saying, no, Konzi, don't eat an apple, it still meant apple. "

"During the summer of 2008, the eminent Notre Dame sociologist Christian Smith led a research team that conducted in-depth interviews with 230 young adults from across America. The interviews were part of a larger study that Smith, Kari Christoffersen, Hilary Davidson, Patricia Snell Herzog and others have been conducting on the state of America's youth. Josh Haner/The New York Times Smith and company asked about the young people's moral lives, and the results are depressing. It's not so much that these young Americans are living lives of sin and debauchery, at least no more than you'd expect from 18- to 23-year-olds. What's disheartening is how bad they are at thinking and talking about moral issues. The interviewers asked open-ended questions about right and wrong, moral dilemmas and the meaning of life. In the rambling answers, which Smith and company recount in a new book, "Lost in Transition," you see the young people groping to say anything sensible on these matters. But they just don't have the categories or vocabulary to do so. "

"And this is how the Civil War comes to life for a roomful of fourth-graders in Northern Virginia, 150 years after the nation's deadliest armed conflict began. Agner's reenactment of the landmark naval Battle of Hampton Roads - a tactile lesson the vet­eran teacher dreamed up this year - drew her Fairfax County class into a chapter of American history that has long provoked education debate. The war's sesquicentennial, starting Tuesday with the anniversary of the attack on Fort Sumter in South Carolina, provides a "teachable moment" for schools everywhere. But how and when students learn about slavery and secession, blue and gray, Ulysses S. Grant and Robert E. Lee, Bull Run (or Manassas) and Appomattox varies enormously from state to state, school to school and even teacher to teacher. This year, Virginia learned anew the sensitivity of Civil War education when the state Board of Education withdrew approval of a fourth-grade textbook - "Our Virginia: Past and Present" - that asserted thousands of African Americans fought for the South. Most historians reject that claim. Last year, the Texas State Board of Education voted to require eighth-graders to study the inaugural address of Confederate President Jefferson Davis alongside President Abraham Lincoln's first and second inaugurals and his Gettysburg Address. That was one of many controversial revisions to Texas standards. Jeremy A. Stern, a historian who reviewed state academic standards this year for the Thomas B. Fordham Institute, said differences in the timing and scope of Civil War education across the United States are dramatic. Often, he said, the war is not taught systematically until middle school. "

"It was April, 1972. The Institute for Advanced Study in Princeton, N. J. The home in the 1950s of Albert Einstein and Kurt Gödel. Thomas Kuhn, the author of "The Structure of Scientific Revolutions" and the father of the paradigm shift, threw an ashtray at my head."

Texas is reissuing US History textbooks this year with a lot of controversial additions and deletions.

Texas textbooks influence the entire US History curriculum around the country. What do you think the effect of Texas' changes will be to history as American students understand it?

"BUSINESSES in nearly every industry were caught off guard by the Great Recession. Few leaders in business - or government, for that matter - seem to have even considered the possibility that an economic downturn of this magnitude could happen. "

"The United States has 50 distinct states, which means there are 50 distinct definitions of "proficient" on standardized tests for students. For example, an Arkansas fourth-grader could be told he is proficient in reading based on his performance on a state exam. But if he moved across the border to Missouri, he might find that's no longer true, according to a new report. "