To beat Mr McCain in November, Mr Obama must persuade Americans that youth and intelligence trump age and experience.
Researchers at the University of Edinburgh then recruited people from that age group who underwent those intelligence tests when they were about age 70.
WSJ: Exercise Might Beat Puzzles for Protecting the Aging Brain
Goodman, Best Truth: Intelligence in the Information Age, New Haven: Yale University Press, 2000, pp. 14-15.
That ability, known as fluid intelligence, also declines with age.
FORBES: Murdoch and Buffett Among the Oldest CEOs. Does It Matter?
The new study, published in the journal Nature, offers one of the first estimates of how much genes and the environment contribute to fluctuations in a person's intelligence between adolescence and old age.
One finding of this technique, which is known as genome-wide complex-trait analysis, is that many of the same genetic factors seem to explain why people differ in intelligence in childhood and old age.
The scientists behind the Nature paper were able to do their analysis thanks to an unusual database maintained in Scotland: records from 1, 940 unrelated individuals whose intelligence was measured first at age 11 and then again at age 65, 70 or 79.
Another finding is that people tend to retain a similar "rank order" in intelligence level between childhood and old age.
My Intelligence Advisory Board will examine the longer-term challenge of sifting through vast universes of intelligence and data in our Information Age.
My Intelligence Advisory Board will examine the longer term challenge of sifting through vast universes of -- of intelligence and data in our information age.
However, another study, by Polk, a market intelligence firm, found that the average age of the cars we drive has continued to climb, from 8.4 years back in 1995 to 11.1 years today.
FORBES: Start Your Personal Fortune By Driving Your Car Until It Drops
At age 36 Drucker says he founded Social Intelligence Corp. earlier this year and that he is backed by professional money.
The NYPD has been a national leader in recognizing that policing in an age of terror requires not only proactive intelligence collection but the ability to act decisively upon the fruits of that collection rather than waiting for disaster to strike, and then reacting.
It is rare for researchers to have access to intelligence data for a group of people from both childhood and old age.
Data on autistic intelligence was often gathered during childhood, at about four or five years of age.
BBC: NEWS | Science/Nature | Autistic ability 'underestimated'
While the Pentagon has backed Mr Chalabi, and air-lifted him into southern Iraq, both the State Department and the Central Intelligence Agency (CIA) have severe doubts about the exile (who left Iraq in 1958 at the age of 13), even though he helped lead an aborted CIA-sponsored plot to overthrow Saddam in the mid-1990s.
This fellowship was established in memory of Nico Colchester, who died in 1996 at the age of 49, after an outstanding career at the Financial Times, The Economist and the Economist Intelligence Unit.
ECONOMIST: Is Europe��s problem German strength or German weakness?
应用推荐