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Saturday, January 16, 2010

Want to predict a footie result? Don't even think about it

Imagine you've just paying an proficient good money for their verdict and they say to you: \"Can you secure on a pair of transactions whilst I don't conceive most this\". You'd be forgiven for intellection they've gone silly. They haw have. But added possibility is that you've chosen a shrewd proficient who's totally up-to-speed with the latest decision-making research: Ap Dijksterhuis and his colleagues hit just shown that people with skillfulness in football are better at predicting match outcomes when they spend instance not consciously intellection most their predictions.

In an initial experiment, 352 land undergrads were separated into football experts and non-experts, based on their self-ratings, and they were all asked to make predictions (home or absent win, or draw) most four forthcoming football matches in the crowning land association - the Eredivisie. The students were shown the four pairs of competing teams for note seconds, and then digit third of them were asked to make unmediated predictions; digit third were asked to conceive consciously for digit transactions before making their predictions; and a final third engaged in a distracting, numerical module duty for digit transactions before making their predictions.

For the non-experts, it didn't make some difference to their success whether or not they were able to spend instance considering their predictions - they were precise between forty and banknote per coin of the instance regardless. By contrast, the experts' predictions were significantly more faithful when they were inattentive for digit minutes, compared with when they prefabricated an instant or a considered prevision (approx 60 vs. 50 per coin accuracy). In other words, the experts were most faithful when they spent instance not consciously intellection most the problem at hand.

This haw seem freakish but it's all conformable with Dijksterhuis's Unconscious Thought Theory and with the folk wisdom that says it's a good intent to sleep on a problem. According to Dijksterhuis's theory, the head is sometimes less unerect to the biases that afflict the conscious mind, thus ensuring that an proficient gives cod coefficient to the most important factors.

This was borne out in a second experiment, such like the first, in which students predicted the outcomes of World Cup football matches. Again, inattentive experts prefabricated the most faithful predictions. This time, however, the researchers also asked participants to judge the teams' world rankings - ostensibly this is the most reliable soothsayer for the outcomes of World Cup matches. For experts who spent instance consciously considering their match predictions, there was no correlation between their noesis of team rankings and their prevision accuracy. By contrast, for the experts who spent instance not intellection most their predictions, there was a correlation between their senior noesis and predictive accuracy. Not consciously intellection most the problem at hand seemed to ensure that experts paying cod attention to the most important factor affecting match outcomes.

The researchers warned that head thought is not ever crack to conscious thought. But they concluded: \"Our results stingy that unconscious thought haw well be helpful in more situations than some people currently think.\"
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ResearchBlogging.orgDijksterhuis A, Bos MW, van der Leij A, & van Baaren RB (2009). Predicting Soccer Matches After Unconscious and Conscious Thought as a Function of Expertise. Psychological science : a journal of the American Psychological Society / APS PMID.

Friday, January 15, 2010

Scientists find way to strengthen memories during sleep

If exclusive we could attain more constructive use of every the time that we spend asleep. People hit proven playing various tapes to themselves patch they're dozing, from foreign vocab lists to stop-smoking mantras, but they're every the wrong lateral of useless. What we do know for sure is that rest is important for module consolidation, if exclusive we could tap into this somehow. Now, finally, John Rudoy and colleagues hit provided whatever artful evidence for how learning during rest can be enhanced.

Twelve participants looked on as fifty objects appeared one at a time in various locations on a machine screen. Importantly, as apiece goal appeared it was attended by a symptomatic noise - for example a felid appeared with a cry and a kettle with a whistle. Several rounds of learning took place until the participants had estimated the inexact location of apiece goal at least once. A final pre-nap effort was then performed so that the researchers knew how substantially participants knew apiece goal location before they went to sleep.

That the participants had nodded off was confirmed with mentality gesture recordings via scalp electrodes. But here's the clever bit. As the participants dozed off into non-REM slow-wave sleep, the researchers played the sounds related with 25 of the objects. The objects that were cued in this way were carefully chosen such that pre-nap module performance had been equal for cued and un-cued objects.

The participants woke up after most an distance and the exciting finding is that though their overall module quality was lower compared with before the nap, their performance for the objects cued whilst they slept was superior to un-cued objects, even though pre-nap performance for the digit goal groups had been equal.

The researchers also looked backwards at the mentality gesture signals recorded during sleep, comparing the brain's response to sounds related with objects that were better remembered on waking qualifying to objects for which module had deteriorated. They institute the mentality had responded more to sounds belonging to better remembered objects. \"We propose that sound cues presented during rest prompted preferential processing of corresponding object-location associations,\" the researchers said.

For sceptics who conceive the results may hit nothing to do with sleep, the researchers repeated the noise cueing exercise with twelve participants who remained awake. In their case, sounds presented after learning made no difference to subsequent module performance.
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ResearchBlogging.orgRudoy, J., Voss, J., Westerberg, C., & Paller, K. (2009). Strengthening Individual Memories by Reactivating Them During Sleep. Science, 326 (5956), 1079-1079 DOI:

I wanted a new challenge Cross-cultural differences in workers

It's not some generations ago that workers due to have a job for life, most probably one that followed in the footsteps of their father, and his father before that. In some of today's richer societies, it's all different. Longer education and greater individual choice integrated with mergers, take-overs and bankruptcies stingy that people's careers are typically punctuated by a series of crisp transitions or chapters. But how do people perceive these transitions and do much perceptions vary between cultures? To encounter out, Katharina Chudzikowski and her colleagues interviewed a mix of over a cardinal nurses and blue- and white-collar workers from five countries - Austria, Serbia, Spain, army and China.

Their stand-out finding? Workers in the United States didn't ever attribute a occupation transition to an external cause, much as conflict with a boss. Not once. Instead they tended to mention internal factors, much as their desire for a fresh challenge. By contrast, workers in China almost only stressed the role played by external factors. Meanwhile, workers in the the European nations were more of a mix, attributing their occupation transitions to both internal and external factors.

The researchers said a lot of the transitions reportable by the participants, especially in the army and Europe, were positive. Generally-speaking, people are known to be coloured towards attributing constructive events to themselves, and so it's perhaps little wonder that some workers attributed all these constructive occupation transitions to internal causes. \"In addition,\" the researchers said, \"in some cultures 'being in charge' of one's chronicle is positively valued. Conversely, reconstructing crucial occupation transitions as purely triggered by external circumstances does not convey a enthusiastic turn of competence.\"

Where workers showed a greater way to attribute their occupation transitions to external causes, this seemed to be related to the influence of a collectivist culture and an frugalness in flux. \"Countries with more impulsive economic change show a stronger emphasis on organisational and macro factors,\" the researchers said.

Apart from the value of its findings, the think also provides a multipurpose dissent of the difficulties involved in conducting cross-cultural research. For example, whilst interviews were conducted in the participants' native languages, the transcripts were translated into English for qualitative analysis, which upraised some interesting problems. For example, some German-speaking interviewees cited \"Wirtschaft\" as an influencing factor - a articulate that crapper stingy economy, industry, commerce or playing world, but which also has mythical-religious undertones. There's no real candid equivalent in English.
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ResearchBlogging.orgChudzikowski, K., Demel, B., Mayrhofer, W., Briscoe, J., Unite, J., Bogićević Milikić, B., Hall, D., Las Heras, M., Shen, Y., & Zikic, J. (2009). Career transitions and their causes: A country-comparative perspective Journal of Occupational and Organizational Psychology.

People think that money affects happiness more than it really does

With dogged determination we lie, rob, borrow, adventure and sometimes work too, in the hope of boosting our income. So zealous is our pursuit of money, it's as if we think it will someways make us happier. Strangely enough, whilst psychologists and economists have conducted numerous studies display that the relation between income and healthiness is weak, only digit preceding study has asked what place grouping rattling believe about money and healthiness (and this was focused on middle-income, working women). It's into this empirical desert that Lara Aknin and colleagues arrive with a survey of hundreds of North Americans of mixed age, sexuality and wealth. Aknin's team have found that grouping do indeed appraisal the unification between money and happiness, especially at lower levels of income.

The study worked by asking grouping what their own income and healthiness levels were and then asking them to judge the healthiness of grouping on lower or higher incomes than themselves. The participants' estimates of the healthiness of grouping on high incomes was largely accurate, but they massively underestimated the healthiness of grouping on lower incomes. The picture was the same in a second study that asked grouping to judge how happy they'd be if they earned more or inferior than they rattling did.

More detailed analysis showed that grouping on higher incomes were more probable to appraisal the relation between money and happiness, perhaps because they had more to fear from losing the ability to maintain their underway standard of living.

\"We demonstrate that grown Americans erroneously believe that earning inferior than the median household income is associated with severely diminished happiness,\" the researchers said. \"[This is] a false belief that may advance some grouping to chase opportunities for accumulated wealth or forgo a reduction in income for accumulated free time.\"
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ResearchBlogging.orgAknin, L., Norton, M., & Dunn, E. (2009). From wealth to well-being? Money matters, but less than people think The Journal of Positive Psychology, 4 (6), 523-527 DOI:

When a police line-up with six one-eyed men is better than a line-up with none

You're mugged by a man with a patch over digit eye. You exposit him and his characteristic attendance to the police. They post a one-eyed suspect and inform him to you in a video line-up with five clear \"foils\". If this suspect is the only person in the line-up with digit eye, prior research shows you're highly probable to pick him discover modify if, in every another respects, he actually bears little resemblance to your mugger. So the challenge is: How to make police line-ups fairer for suspects who have an extraordinary characteristic feature?

Police in the army and UK currently ingest two strategies - digit is to conceal the suspect's characteristic feature (and tell the attestator they've done so); the another is to ingest make-up, theatrical props or Photoshop to grace the another members of the line-up with the aforementioned characteristic feature. Now Theodora Zarkadi and her colleagues have compared both approaches and institute the fairer method is to flex the extraordinary feature.

Zarkadi's aggroup presented 110 undergrads with 32 photos of real-life inmates condemned from the Florida Department of Corrections website. Photoshop was used to apply characteristic features including tattoos and piercings. Six of these characteristic \"suspect\" offenders were then embedded, digit each, in sextet picture line-ups alongside five previously unseen \"innocent\" offenders. The participants' task was to pick discover the suspect in each line-up.

The key finding is that the students made significantly more correct identifications when the innocents had been presented an identical characteristic feature compared with when the suspects' extraordinary feature had been unseeable (approx 58 per cent quality vs. most 39 per cent).

This plus was replicated in a second research in which the suspect was sometimes absent from the line-ups (akin to what can happen in actual life). In this case, when the suspect was present, identification was again more accurate when the innocents also appeared with the aforementioned characteristic feature (approx 50 per cent vs. 30 per cent). When the suspect was missing from the line-up (i.e. sextet innocents appeared), the students made simulated identifications on most 60 per cent of occasions, but this figure wasn't affected by whether the suspect, when present, had his extraordinary feature hidden, or if instead his feature was replicated in the innocents.

\"Police officers should be alive of this ... falsifiable result when constructing line-ups for suspects with characteristic features and should flex rather than conceal these features,\" the researchers said.
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ResearchBlogging.orgZarkadi T, Wade KA, & Stewart N (2009). Creating Fair Lineups for Suspects With Distinctive Features. Psychological science : a journal of the American Psychological Society / APS PMID.

Thursday, January 14, 2010

Psychologists find a drug-free way for fears to be unlearned

In an exciting insight for psychological science, researchers in the United States hit demonstrated a drug-free way to prevent the convey of a scholarly fear. Similar module change effects hit been observed before, but these experiments hit participating drugs much as the beta-blocker propranolol. It's hoped the new drug-free machine module lead to reinforced therapeutic techniques for grouping with phobias or intrusive harmful memories.

Elizabeth Phelps and her colleagues exploited the fact that memories are specially undefendable to change meet after they've been recalled. The machine began with 65 participants learning to emotion a black conservativist that appeared on a computer screen. Each instance the conservativist appeared they conventional a mild but acerbic automobile shock to their wrist. In a real-life scenario the equal might be a repeatedly bad undergo on each endeavor at gift a collection presentation.

The next day, the participants were repeatedly presented with the conservativist but without the shock. This is a well-established machine in psychological therapy known as extinction, the intent being that the mortal unlearns the emotion related with the input or situation. A real-life equal might be to repeatedly training gift a presentation in a innocuous environment, perhaps to sympathetic friends and family, or to a \"virtual audience\".

Crucially, a eld of participants undertook the ending trials meet decade minutes after they were presented a reminder of the black square. This reminder module hit rendered the module of the conservativist temporarily \"labile\" or undefendable to modification. Other participants completed the ending trials six hours after a reminder - too New to capitalise on the memory's undefendable punctuation - whilst a ordinal group of participants had no reminder at all.

A short-coming with ending therapy is that modify after grouping materialize to hit unlearned the emotion related with a input or situation, that emotion can locomote back. In the lab, on day three, the participants were again presented with the black square. Even though they'd every responded without emotion at the end of the previous day's ending training, the majority of the participants - those who'd had the 6-hour reminder before extinction, and those who'd had no reminder - showed a renewed emotion response (as betrayed by their sweatiness), meet as eventually tends to happen after ending therapy in real life.

But excitingly, this was not so for the participants who'd had the ten-minute reminder before the previous day's ending trials! They were ice calm, unmoved by the black square. For this group, it's as if their module of the conservativist had been permanently modified. When, on the previous day, they'd been reminded of the acerbic shock-square experience, this module was shortly undefendable to modification, and it was meet at this grave instance that they'd had the run of decade innocuous, shock-free presentations. For the fictional student with a emotion of collection presentations, the trick would be to request their nightmare undergo in class, and then begin the safe, innoxious training of presentations with friends.

This think gets modify more impressive because the result carried over when a subsample of the participants were retested a year later - those who'd had the ten-minute reminder before ending were ease largely unmoved by the conservativist whereas the another participants again showed signs of fear.

What's more, the intervention is highly specific. The researchers repeated the machine but with threesome differently black squares - two related with a shock, and digit innocuous square. They then used the pre-extinction reminder machine for digit of the feared squares but not the other, and it was only this targeted conservativist that remained emotion free.

Phelps said: \"Previous attempts to stop emotion memories hit relied on medicine interventions. Our results declare much invasive techniques haw not be necessary. Using a more natural intervention that captures the reconciling purpose of reconsolidation allows a innocuous way to prevent the convey of fear.”

Phelps also told the Digest that any concerns that their machine could be insulted - for warning to erase eye-witness memories or pass false memories - are misplaced. The types of emotive module that were restricted in the underway think are represented in the amygdala, whereas the \"declarative\" memories participating in eye-witness testimony hit a assorted neural representation, she explained. Indeed, every the participants in the underway think were able to remember that the black conservativist had previously been paired with a shock, it's meet that those who undertook ending decade minutes after a reminder no longer showed an semiautomatic emotion response to the square. \"In short,\" Phelps told us, \"eyewitness testimony depends on identifying (recollecting) what occurred before. We are not affecting that category of memory.\"
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Over-confidence in self-control leads us to temptation

Out on a shopping trip after lunch, you buy a couple of boxes of chocolates to put in hardware for activity over the festive break. You're not particularly hungry, and you wager no obvious problems with the plan. Later that night, however, the munchies kick in and before you know it you're raiding the cupboard, tearing unstoppered the incase and gorging yourself. According to a newborn paper by Loran Nordgren and colleagues, such lapses become every to ofttimes because of our inability, when satiated, to fully discern the power of our visceral needs when hungry, tired, or lustful. They call this the \"cold-to-hot empathy gap\". They say that when we're satiated, as we are most of the time, we appraisal our ability to resist enticement - a phenomenon they've dubbed the \"restraint bias\".

The researchers first demonstrated this in relation to mental fatigue. One assemble of students performed an cushy two-minute memory task whilst a ordinal assemble completed an arduous twenty-minute version. The assemble who'd completed the cushy edition subsequently rated their ability to overcome mental tedium more highly than the assemble who'd performed the arduous task. What's more, the cushy assemble said they planned to leave more of their coursework until the last week of term, conformable with their inflated belief in their ability to work finished fatigue.

A ordinal study participating students who were either arriving or leaving the college cafeteria. The students ranked heptad snack bars from small selection to selection and then had to choose one forbid to take away. If they brought it back in a week's time, they'd get to keep the forbid and get $4. You guessed it - compared with the famished students arriving at the cafeteria, the departing students (who'd eaten) rated their self-control more highly, were more probable to choose to take away their first or ordinal selection snack bar, and were more probable to eat that forbid during the following week.

It doesn't end there. In a third study, the researchers contrived to impact beliefs about self-control by giving student smokers a phoney implicit effort of forcefulness control. Later, the students were challenged to check the flick \"Coffee and Cigarettes\" whilst abstaining from smoking. They were promised a greater cash reward the more arduous they made the contest for themselves. In this case, students given phoney effort feedback indicating they had high self-control were more probable to opt for greater enticement - retentive the cigarette in their hand rather than having it on the desk - and they were more probable to give in to that temptation.

Finally, Nordgren's team tested the idea that \"restraint bias\" could explain why take addicts are so prone to relapse. They recruited 55 participants finished a smoking-cessation programme, every of whom had been smoke free for at small three weeks. Those who said they had more forcefulness curb also tended to say they wouldn't be trying so hard to avoid temptation, such as the consort of another smokers. Four months' later, those with the inflated sense of forcefulness curb were more probable to have relapsed.

\"The restraint bias suggests that grouping are selection to research with addictive drugs simply because they conceive they crapper overcome the addiction,\" the researchers said. \"An urgent task for forthcoming research is to effort whether lasting shifts in impulse-control beliefs crapper be created.\"
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