We Need Fewer Science Majors Not More

It's an article of faith: the United States needs more native-born students in science and other technical fields. The National Academies' influential Rising Above the Gathering Storm report in 2006 said the nation should "enlarge the pipeline of students who are prepared to enter college and graduate with a degree in science, engineering, or mathematics" to remain competitive. The U.S. Chamber of Commerce had a similar message on the gap in so-called STEM (science, technology, engineering, and mathematics) students a year before. President Barack Obama has pushed for more science teachers and training for the same reason.

But a new paper (pdf) contradicts the notion of a shrinking supply of native-born talent in United States. "Those who advocate increasing the supply of STEM talent should cool their ardor a little bit," says one of its authors, B. Lindsay Lowell, a demographer at Georgetown University in Washington, D.C.

The supply has actually remained steady over the past 30 years, the researchers conclude from an analysis of six longitudinal surveys conducted by the U.S. government from 1972 to 2005. However, the highest-performing students in the pipeline are opting out of science and engineering in greater numbers than in the past, suggesting that the threat to American economic competitiveness comes not from inadequate science training in school and college but from a lack incentives that would make science and technology careers attractive.

Bad Economy: Sharp Rise in Runaways

Over the past two years, government officials and experts have seen an increasing number of children leave home for life on the streets, including many under 13. Foreclosures, layoffs, rising food and fuel prices and inadequate supplies of low-cost housing have stretched families to the extreme, and those pressures have trickled down to teenagers and preteens. . . .

The best measure of the problem may be the number of contacts with runaways that federally-financed outreach programs make, which rose to 761,000 in 2008 from 550,000 in 2002, when current methods of counting began. (The number fell in 2007, but rose sharply again last year, and the number of federal outreach programs has been fairly steady throughout the period.)

To Remember is to Forget: Rethinking Memory

“Having a memory that is too accurate is not always good” [from an evolutionary standpoint] . . .

Put another way, memory and imagination are two sides of the same coin. Like memory, imagination allows you to put yourself in a time and place other than the one we actually occupy. This isn’t just a clever analogy: In recent neuroimaging studies, Harvard psychologist Daniel Schacter has shown that remembering and imagining mobilize many of the same brain circuits. “When people are instructed to imagine events that might happen in their personal future and then to remember actual events in the past, we find extensive and very striking overlap in areas of brain activation,” he says. Other researchers have found that people with severe amnesia lose their ability to imagine. Without memory, they can barely picture the future at all.