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pierredv : experiment   28

Exclusive: Grave doubts over LIGO's discovery of gravitational waves | New Scientist Nov 2018
“We believe that LIGO has failed to make a convincing case for the detection of any gravitational wave event,” says Andrew Jackson, the group’s spokesperson. According to them, the breakthrough was nothing of the sort: it was all an illusion.
LIGO  gravity  cosmology  experiment  NewScientist  physics 
april 2019 by pierredv
For my next trick... | The Economist 26 Mar 2016 - clinical trials
"Too many medical trials move their goalposts halfway through. A new initiative aims to change that"
" A meta-analysis—a study of studies—published in BMC Medicine in 2015 found that 31% of clinical trials did not stick to the measurements they had planned to use. Another paper, published in PLOS ONE, also in 2015, examined 137 medical trials over a six-month period and found that 18% had altered their primary outcomes halfway through the trial, while 64% had done the same with secondary, less-important measures of success."
medicine  clinical-trials  scientific-method  reproducibility  experiment  Ben-Goldacre 
august 2016 by pierredv
Creativity and cheating: Mwahahaha… | The Economist
"showed not only that creative people cheat more, but also that cheating seems to encourage creativity—for those who cheated in the adding-up test were even better at word association than their candle-test results predicted"
TheEconomist  cheating  creativity  psychology  experiment 
october 2015 by pierredv
Kitchen-table physics lets you do big science at home - physics-math - 26 February 2015 - Control - New Scientist
Great stuff, e.g. Jam jar detector of time reversal symmetry - mirror magnetometer: bit.ly/1CvBkVh Gravitational wave detector with laser pointer - Michelson interferometer: bit.ly/1DFY0zf
science  experiment  NewScientist  fun  DIY  physics  * 
july 2015 by pierredv
Eight weeks to a better brain | Harvard Gazette
"Participating in an eight-week mindfulness meditation program appears to make measurable changes in brain regions associated with memory, sense of self, empathy, and stress." "For the current study, magnetic resonance (MR) images were taken of the brain structure of 16 study participants two weeks before and after they took part in the eight-week Mindfulness-Based Stress Reduction (MBSR) Program at the University of Massachusetts Center for Mindfulness." "The analysis of MR images, which focused on areas where meditation-associated differences were seen in earlier studies, found increased gray-matter density in the hippocampus ... Participant-reported reductions in stress also were correlated with decreased gray-matter density in the amygdala "
meditation  brain  experiment  psychology  MBSR 
january 2015 by pierredv
Sign in to read: Just obeying orders? Rethinking obedience and atrocity - opinion - 12 September 2014 - New Scientist
Stanley Milgram "shock experiments" "Not only have recent historical studies led researchers to question Arendt's claims that Eichmann and his ilk simply went along thoughtlessly with the orders of their superiors, but reanalysis of Milgram's work has also led social psychologists to cast serious doubt on the claim we are somehow programmed to obey authority." See sidebar on Philip Zimbardo "prison experiment": "Although Zimbardo presents his findings as evidence of "blind conformity" to role, it is apparent that he gave his guards clear guidance on how he expected them to behave when briefing them for the study." "...we have argued that the behaviour of those guards was not the result of blind conformity, but the result of engaged followership that flowed from identification with Zimbardo's leadership"
Stanley.Milgram  psychology  experiment  obedience  Zimbardo  prison  evil  ** 
october 2014 by pierredv
Idle minds succumb to temptation of electric shocks - health - 04 July 2014 - New Scientist
"Many of us dislike being left alone with nothing to do but think, and would be happier self-administering an electric shock than sitting idle. Timothy Wilson of the University of Virginia in Charlottesville and his colleagues wanted to find out whether letting your mind wander is a pleasant experience. In a series of experiments, people were told to sit still and do nothing but think. The participants not only found the experience unpleasant, they also opted to give themselves mild electric shocks, possibly to relieve the boredom." "Nonetheless, when left alone, 67 per cent of men and 25 per cent of women chose to voluntarily zap themselves"
NewScientist  psychology  experiment  boredom  meditation 
october 2014 by pierredv
Bias | ACM Interactions - Jonathan Grudin
"Confirmation bias is built into us. Ask me to guess what a blurry image is, then bring it slowly into focus. When it has become clear enough to be recognizable by someone seeing it this way for the first time, I will still not recognize it. My initial hypothesis blinds me. Quantitative studies are no guard against these problems. In fact, they often exhibit a seductive form of confirmation bias: inference of a causal relationship from correlational data, a major problem in conference and journal submissions I have reviewed over the years. Am I biased about the importance of confirmation bias? I’m convinced that we must relentlessly seek it out in our own work and that of our colleagues, knowing that we won’t always succeed. Perhaps now I see it everywhere and overlook more significant obstacles. So decide how important it is, and be vigilant."
qualititative  methods  experiment  grounded  theory  confirmation  bias  correlation  vs  causation  Francis  Bacon  bias  statistics 
august 2013 by pierredv
Encoding many channels on the same frequency through radio vorticity: first experimental test
Abstract
We have shown experimentally, in a real-world setting, that it is possible to use two beams of incoherent radio waves, transmitted on the same frequency but encoded in two different orbital angular momentum states, to simultaneously transmit two independent radio channels. This novel radio technique allows the implementation of, in principle, an infinite number of channels in a given, fixed bandwidth, even without using polarization, multiport or dense coding techniques. This paves the way for innovative techniques in radio science and entirely new paradigms in radio communication protocols that might offer a solution to the problem of radio-band congestion.
wireless  technology  encoding  experiment  RF 
march 2012 by pierredv
How not to change a climate sceptic's mind - Dan Kahan = 18 March 2011 - New Scientist
"Kahan grades people on two scales of cultural belief: individualists versus communitarians, based on the different importance people attach to the public good when balanced against individual rights; and hierarchists versus egalitarians, based on their views on the stratification of society. Republicans are more likely to be hierarchical-individualist, while Democrats are more often egalitarian-communitarian. People's views on contentious scientific issues tend to reflect their position on these scales. For example, egalitarian-communitarians tend to accept the evidence that climate change is a threat, while hierarchical-individualists reject it."
psychology  experiment  argumentation  climate  NewScientist  politics 
april 2011 by pierredv
Imagine the Possibilities | Brain Blogger
"Researchers have discovered a way for people to eat less: imagine eating"
Reporting research in Science, so pretty reliable
diet  health  experiment  via:brainblogger 
january 2011 by pierredv
Psychology: The power of posture | The Economist
"How you hold yourself affects how you view yourself"
Research by Huang and Galinsky at Northwestern
psychology  experiment  posture  leadership  TheEconomist 
january 2011 by pierredv
Pain Alleviates Guilt
Agony seems to alleviate guilt. "Punishment relieves psychological pressure, allowing you to return to the comforting illusion of a just world. The person you harmed is no better off, but your stress is relieved." May in part explain the cathartic effect of painful meditation.
psychology  guilt  experiment  pain  meditation 
january 2011 by pierredv
Elevate yourself to become more virtuous - life - 13 January 2011 - New Scientist
"Positioning people at elevated heights can make them more compassionate, helpful, co-operative and charitable "
Cf. dhamma seat?
psychology  ethics  compassion  neuroscience  experiment 
january 2011 by pierredv
Foreign aid on trial - environment - 15 December 2010 - New Scientist
Case for randomized trials of development projects. Work of Paul Collier (Oxford) and Esther Duflo (MIT) Quote: Development economist William Easterly of New York University argues that throughout the history of development aid, successes and failures have rarely conformed to any simple picture. "After half a century of research," he says, "it's safe to say that economists still don't have any real understanding of why one country has a high rate of growth and another doesn't." The problem is that experiments are bad politics. Quote: Anecdote: African farmers used mosquito nets for fishing.
economics  development-assistance  experiment  poverty  NewScientist  growth 
december 2010 by pierredv
What's in a name? The words behind thought - life - 06 September 2010 - New Scientist
"You think more words than you speak – perhaps because language really does shape the way we navigate the world"
language  psychology  experiment  cognition  NewScientist 
december 2010 by pierredv
Free Will is NOT An Illusion | Brain Blogger
By W. R. Klemm, DVM, PhD Explanation of weaknesses in experimental claims about non-conscious decisions actually made before conscious awareness
philosophy  psychology  experiment  brainblogger 
november 2010 by pierredv
The Associated Press: Report: Money can buy you happiness, to a point
People's emotional well-being - happiness - increases along with their income up to about $75,000, researchers report in Tuesday's edition of Proceedings of the National Academy of Sciences
happiness  psychology  experiment  money 
september 2010 by pierredv
Ewwwwwwwww! - The Boston Globe
"... the argument that some behavioral scientists have begun to make: That a significant slice of morality can be explained by our innate feelings of disgust. A growing number of provocative and clever studies appear to show that disgust has the power to shape our moral
judgments."
"morality is not, as the Buddha and St. Augustine said, a way to curb our animal desires: It’s simply an outgrowth of that same animal nature"
morality  psychology  experiment  emotion  **  quotations 
august 2010 by pierredv
Brain damage skews our moral compass - life - 30 March 2010 - New Scientist
"The discovery is helping to unravel how we make moral judgements – and has implications for people's fitness to serve as jurors or judges " Moral dilemmas presented to people with damage to ventromedial prefrontal cortex; responded differently to "normal" controls "Young concludes that both emotion and recognising intent in others are key to moral judgements." conclusion from Owen Jones of Vanderbilt: "They reveal regions that simply must be intact and functioning for people to make important moral and legal decisions"
NewScientist  experiment  brain-VMPFC  brain-temporparietal  ethics  neuroscience  behavior  morality 
may 2010 by pierredv
Under Threat, Women Bond, Men Withdraw: Scientific American
"Men get antisocial under pressure, but women tend to react in the opposite way" After stress, subjects shown faces in fMRI; women showed increased processing in fusiform face area (FFA) and insula
psychology  gender  stress  experiment  neuroscience  Scientific  American  brain-insula 
april 2010 by pierredv
Epiphenom: The hypnotic power of charismatic religion
"Just telling a pentecostalists that someone has healing powers makes them think that they are highly charismatic. What's more, they didn't feel God's presence in the prayers read by the person they were told was a non-Christian."
belief  religion  psychology  experiment 
april 2010 by pierredv
Damaged brains escape the material world - life - 11 February 2010 - New Scientist
"Increased feelings of transcendence can follow brain damage, a study of people with brain cancer suggests." "The brain region in question, the posterior parietal cortex, is involved in maintaining a sense of self, for example by helping you keep track of your body parts. It has also been linked to prayer and meditation" Link to Damasio by linking mediation/transcendence to self-definition People score highly for self-transcendance " answer "yes" to questions such as: "I often feel so connected to the people around me that I feel like there is no separation"; "I feel so connected to nature that everything feels like one single organism"; and "I got lost in the moment and detached from time". The same people also tend to believe in miracles, extrasensory perception and other non-material phenomena."
psychology  spirituality  neuroscience  NewScientist  damasio  religion  brain-posteriorparietalcortex  experiment 
march 2010 by pierredv
Massage eases anxiety, but no better than simple relaxation does
A new randomized trial shows that on average, three months after receiving a series of 10 massage sessions, patients had half the symptoms of anxiety. This improvement resembles that previously reported with psychotherapy, medications, or both. But the trial, published in the journal Depression and Anxiety, also found massage to be no more effective than simple relaxation in a room alone with soft, soothing music
anxiety  health  experiment  psychology 
march 2010 by pierredv
Giving the 'unconscious' a voice - health - 03 February 2010 - New Scientist
some patients diagnosed in vegetative state can give yes/no answers by fMRI imaging of them imagining different physical activities
consciousness  NewScientist  experiment  neuroscience 
march 2010 by pierredv
Listening to Your Pulse : The Frontal Cortex
Importance of Damasio's "body loop". Players of the Iowa Gambling Test (IGT).
via Boston Globe: "People who were more accurate at counting their own heartbeats picked more cards from the decks with better returns. It seems that people who are in touch with feedback from their own body have an easier time learning from positive and negative experiences."
psychology  body  brain  emotion  sensation  damasio  decision-making  experiment 
february 2010 by pierredv

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