GROUP INTELLIGENCE: Being the smartest guy in the room doesn't necessarily mean your team is going to be the strongest.

In a recent study, researchers found that having super-smart group members did not have a significant effect on how well the group did on brainstorming ideas, solving word games and math problems or completing small projects.

Instead, groups did better when they had members with higher levels of "social sensitivity" — empathy, or "how well group members perceive each other's emotions", said study author Christopher Chabris, a psychology professor at New York's Union College.

And the people likeliest to display such a trait were women. A group's "collective intelligence", or its ability to do well on a broad range of tasks, often lined up with how many women were in the group.

The best-performing groups also had members who co-operated well. Members of such groups let each other talk more often — individuals didn't try to hog the conversation.

The researchers tested 669 people, recruited in Boston and Pittsburgh. The study split participants into groups of two to five people. Results were published September 30 in an online issue of Science.

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WOMEN EXECS LEAVING: Women executives, who were vastly outnumbered by their male counterparts over a nine-year period, were also more likely to lose or leave their jobs, according to a recent study.

In the study, 5.5 percent of the executives of Standard & Poor's 1,500 companies were women during a nine-year period. Of those, 7.2 percent left their jobs, whether for personal reasons or because they were fired. Only 3.8 percent of the male executives left their positions during the same period.

Women were more likely than men to leave their jobs voluntarily and involuntarily. Women may choose to leave more frequently because of other responsibilities, such as a family, said Oregon State professor John Becker-Blease.