An anonymous reader writes: Modern corporations seem to have devalued older scientists. They are all to happy to have their veteran employees, scientists included, take an early retirement so that they can be replaced by younger people who expect fewer benefits and will work for lower pay. Thomas Kuhn, philosopher of science and author of the influential book, "The Structure of Scientific Revolutions," believed that revolution in science was forged only by younger scientists. Some older studies of small academic groups seemed to show that scientific productivity peaks at middle age and declines thereafter. A newer study of 13,680 university professors found that scientific productivity still increases up to age 50, and it then stabilizes from age fifty to retirement for the more industrious researchers. When "high impact" publications are considered, researchers older than 55 still hold their own. A recent paper in the Proceedings of the National Academy of Sciences shows that the majority of Nobel Laureates in Chemistry from 1901 to 1960 did their prize-winning work by age 40. After 1960, chemistry laureates were more likely to have done their prize-winning work after age 40.
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