Word: keys
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...symbols that won them a smiley face, but some men were worse than others at avoiding the ones that resulted in sad faces. Those men, it turns out, had a particular gene variant, or allele, that reduces the density of receptors for dopamine - a neurotransmitter that plays a key role in motivation, pleasure and addiction - in certain areas of the brain. Brain scans also showed significantly less activity in those areas in response to the sad-faced negative feedback, in the men who had the allele. When it occurred, however, that brain activity was linked to activity in other parts...
...this particular genotype really affects any given individual - or that having it would even be a bad thing. "Under certain circumstances it might be positive [for a person] to ignore negative feedback and to persevere," says Ullsperger. Soldiering on in the face of setbacks, after all, is a key ingredient for success. In the end, these new findings may well be one of many steps toward piecing together the puzzle of learning...
...with most health problems, the key is prevention, and the effort cannot be left up to the individual - parents ought to be the first to take responsibility. Dismissing childhood obesity as baby fat or relying on a kid's will power is simply not a solution, says Baker. "We cannot consider it just to be a cosmetic problem. It's a health risk problem," she says. "We can no longer sit back and wait, and think a child may grow...
...pointed out that since Pakistan is a key ally in the fight against terrorism, the Bush Administration deems the regime worthy of continued funding despite Musharraf's unconstitutional actions. This reminds me of how the U.S. backed South American dictators in the name of preventing the spread of communism. Allowing democracy to be so egregiously revoked does not bode well for U.S. policies in the region, and it is only a matter of time before this current ally withers from lack of popular support. Defeating communism required the cooperation of governments; defeating terrorism will require the cooperation of people. Jitesh...
...Khaldun. But few economists in the 1970s even considered that real-world tax rates could be on the wrong side of the Laffer Curve. Laffer thought they might be, and Wanniski argued on the Journal's editorial page and elsewhere that they almost certainly were. The claim became a key plank of Ronald Reagan's successful 1980 campaign for President...