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分类: IT业界

2011-09-03 16:13:58

Children born in the winter months, a few key? GE against them. Study after study has shown that test poorly, do not go as far in school, earn less, live less healthy and not born as long as the children at other times of the year. Researchers have documented the effects of years of work and trying to understand it. But? Economists
Kasey Buckles and Daniel Hungerman of the University of Notre Dame found an explanation can? Tion no explanation ren? Why the season of birth problems. Your discovery calls into question the validity of previous research and shows how seemingly s? R? Economists frame their assumptions can k? The main causes for strange effects to overlook. And they came upon them by chance.
In 2007, Mr. Hungerman research 
  on the behavior of the brothers and sisters, when he noticed that children tend to be born into families at the same time of year. Meanwhile, Ms. Buckles examining economic factors that lead to multiple births, and sto? S what looked like a relationship? Levels of education and the children were born.
? Mothers I was just playing with the data and an unexpected result, Mrs. Buckles recalled the trend that mothers were less educated to have children in the winter. The two economists
?, Whose offices are opposite each other,
 compared notes and realized they might one day  qweig0903 have an answer to the R? Stumbled tsel season of birth, previous studies had negligible? Ssigt.
An important assumption of most of this research are that the origins of the children born in winter as the origin of babies born at other times of the year. There must be something to those kids in winter accounts for their successful B happened? Se born.
In a famous 1991 paper, argued that? Economists Joshua Angrist of the Massachusetts Institute of Technology, and Alan Krueger of Princeton University, that the season of birth differences in the fa? One whose children are in school it is good? the fa? education on laws affecting children born at different times of the year. Children 
  born in winter, reaching its 16th Tt birthday in the year than other children, the hei t, they can legally leave school during the school year tt -. Some do, what
to lower levels of the education system in the group will apply to all of this research lie. But if it found any truth in the model that Mr. and Mrs. Buckles Hungerman, w re? It question of the weight of the other factors of previous research. When winter babies were more likely to come from socially disadvantaged families, w re? It natural 
 to expect them to do worse things in life. Both
? Born economists examined birth certificate data from the Centers for Disease Control and Prevention for 52 million children 1989-2001, which almost all births in the United States in these years.
The same trend continues to emerge: the proportion of children born to single mothers, mothers and mothers minderj olds who had not completed high school, always an H ans in January of each year?. ? Minderj on the 13-year period, including 13.2% of births in January olds were mothers, compared with 12% in May - a small but statistically significant difference, they say .laser skinear correctionbreast surgeryLiposuctionlaser skinear correctionbotox breast surgery  fmdw110903 addjgvldo
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