Scientific papers that use old and new knowledge get the most attention

ANN ARBOR'An examination of millions of scientific papers and patents reveals works that land in the top 5 percent of the most cited research draw upon a mix of old and new knowledge-significant in a day and age when the number of new publications is increasing dramatically, says a researcher at the University of Michigan. Daniel Romero, assistant professor at the U-M School of Information, and colleagues from Northwestern University analyzed more than 28.4 million scientific papers in the Web of Science and nearly 5.4 million U.S. patents to determine which works were cited the most and why. They found what they referred to as the hotspot in which researchers doubled their chance of being cited. This hotspot occurred when the research used a low mean age and high age variance, in other words when it included the latest information available in combination with some tried-and-true research from the past. "It is natural for scientists to gravitate towards popular and 'hot' research topics and ideas," Romero said. "While focusing on solving recent problems and being aware of the state-of-the-art is crucial to make impact, we find that this is only half of the story. Old and established knowledge is also important and should be part of our thinking when we do research." The authors note the vast acceleration in the production of new knowledge and the tendency for researchers to think newer is better.