Scientists think they are more rational and objective than others think they are

Apparently scientists tend to think of themselves as more rational, objective, and intelligent than non-scientists. Makes sense. And laypeople tend to think that of scientists too. But the scientists surveyed in a new study from Tilburg University in the Netherlands apparently see themselves as much more rational, objective, and intelligent than non-scientists. Are they overconfident or, well, right? From Scientific American:

The team surveyed both scientists and highly educated nonscientists and asked them to rate the two categories of people in terms of objectivity, rationality, integrity, open-mindedness, intelligence and cooperativeness.

Both groups rated scientists higher on every one of these measures, yet scientists perceived bigger differences between the two groups than laypeople did. “That surprised us,” says psychologist Coosje Veldkamp, the study's lead author. “We expected scientists to have a more realistic picture, but they see a larger difference,” she says. (Some of these perceptions may be accurate, of course, but other research would be needed to determine that.)

The scientists' positive self-ratings may be partly explained by the human tendency to judge members of groups we belong to more favorably than others. Further investigation showed that established scientists judged their established peers more positively than those at earlier career stages, and female scientists rated researchers of their own gender more highly. “People who identify more strongly with their group display more in-group bias,” Veldkamp explains. “Women are still a minority in science, and minority-group members have been found to identify more strongly with their group.”