Showing posts with label experiment. Show all posts
Showing posts with label experiment. Show all posts

Sunday, September 04, 2011

Last-Name effect – An interesting theory.

Last-Name effect – everyone whose last name begins with some of the last letters of the alphabet were last at everything in school, and later, as adults, they are buying everything they can get their hands on because of fear that supplies will disappear. 

According to the new study, people whose last name begins with the last letter of the alphabet (Z) are making the fastest decisions when it comes to shopping. What could explain this weird phenomenon, which the authors of this theory called “last-name effect”? Here is an interesting explanation.

American obsession with alphabetical order, especially in the education system, often places those whose last name begins with a letter “Z” at the end of the line, causing different kind of suffering in life of those persons. For example – they are always last in line at the canteen and the other kids are taking all the chocolate milk before them…also, in most cases, they are placed in the last rows in the classroom, so they have to put a great effort to get the attention of teachers. Later in life of those persons, as soon as they see a product that is discounted (or if someone offers them something to buy) they are immediately buying them because they have a fear that the supplies will disappear. In those moments, they finally have “chocolate milk” within their reach.


For years, simply because of your name, you've received inequitable treatment. So when you get to exercise control, you seize on opportunity. It's a coping strategy, and over time it becomes a natural way to respond” – explains Kurt Carlson, an assistant professor at Georgetown's McDonough School of Business and a co-author of the paper on this subject.

He and Jacqueline Conard, an assistant professor at the Massey Graduate School of Business at Belmont University, have uncovered the “last-name effect” through an experiment.

They selected a group of students and send them an e-mail, offering them free tickets to a basketball game.  Within that e-mail, they highlighted that the offer is limited. The average response time of people whose last names begins with some of the last nine letters of the alphabet (from R to Z) was 19.38 minutes. Those whose last name begins with some of the first nine letters of the alphabet had an average response time of 20.08 minutes, which is a statistically significant difference.

These results drove “Time” journalist Sean Gregory to verify this theory. He took the list of workers and found Paul Zelinski, a production director for “Time” and “Sports Illustrated” for kids. Zelinski told him that he spent many days in the back of the class as a student in Brooklyn Catholic schools.

In grammar school, I didn't mind, because there was this girl next to me who was cute. But in high school, it stunk. I couldn't see over the taller guys in front of me” – said Zelinski.

He claims that “last-name effect” makes sense. For example, he is always looking to make a quick agreement on a deal, and he recently bought a car over the internet for a good price. However, he is still afraid that he will be on the fringe. When he goes to watch a game, he often arrives two hours earlier, just to grab the best seat and have a good view of a game.

I don't know if that has to do with being Zelinski or being Polish. I might have to go into therapy to find out.” – Zelinski said.
read more...

Thursday, March 03, 2011

"Ecstasy" is not causing brain damage!

After serious research, medical experts from Harvard have come to this shocking discovery.  They have also criticized all previous studies on the subject of harmfulness of MDMA.

Most recent research that has shown that it is not true that "ecstasy" causes brain damage, like it was considered and substantiated with many studies a decade ago, has caused shock and concern. How to tell the public now that "ecstasy" is not bad, given that its use is widespread and that it is the cheapest drug? Will these results encourage more drug use, and will those who had doubts whether to try the "party pill" or not now be persuaded to do so?

Research that proves that the pill, without which rave can not be imagined, is not harmful, is one of the largest that studied consequences of taking MDMA (3,4-methylenedioxymethamphetamine, official title of this illegal substance) and was conducted by a team led by Professor John Halpern from Harvard Medical School. The results were published last week in a magazine "Addiction".

Experiments from Harvard have shown that cognitive abilities of "ecstasy" users are equal to those that are "clean”.  Until now, the consumption of "ecstasy" was associated with the damage of the central nervous system.  With his results, Halpern openly criticized the quality of all previous studies that linked this drug with the brain damage.

"Too many studies have been carried out on small populations, while overarching conclusions have been drawn from them" - Halpern said, adding that some previous researches did studied users of the rave culture, which includes all-night dancing, lack of sleep and fluids, and which are itself factors that contribute to the negative cognitive effects. But, it wasn’t taken into account that ecstasy users consume and other drugs and alcohol, which can affect cognition, or that some of them might have suffered disruption of intellectual skills before they started taking "ecstasy".

Halpern’s study took into account only those “ecstasy” users who weren’t taking any other drugs and who didn’t suffer any previous brain damage. In his experiment, 1,500 potential participants were reduced to 52 selected users whose cognitive abilities were equal to those of the 59 persons who do not use drugs. Even samples of hair were taken from the participants to find out if they were lying about drugs and alcohol.

"Essentially we compared one group of people who danced and raved and took ecstasy with a similar group of individuals who danced and raved but who did not take ecstasy. When we did that, we found that there was no difference in their cognitive abilities" – Halpern says.

Although the results of previous studies indicated that ecstasy causes memory loss and long-term consequences on behavior, some scientists, like English Professor David Nutt, who was fired as chair of the Advisory Council on the Misuse of Drugs for publicly stating that alcohol and tobacco were more harmful than ecstasy, were not surprised with these results. "I always assumed that, when properly designed studies were carried out, we would find ecstasy does not cause brain damage," said Nutt.


However, Halpern did admit that the use of “ecstasy” has its risks.Ecstasy consumption is dangerous:  illegally-made pills can contain harmful contaminants, there are no warning labels, there is no medical supervision, and in rare cases people are physically harmed and even die from overdosing. It is important for drug-abuse information to be accurate, and we hope our report will help upgrade public health messages.  But while we found no ominous, concerning risks to cognitive performance, that is quite different from concluding that ecstasy use is ‘risk-free’."
read more...
Related Posts with Thumbnails