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When your team gives 140 percent

Study   People often over-claim their own contributions to the team

A new study finds that the bigger the teams, the more individual members of a team "over-claim" their contributions.

It's not that people intend to take more credit than due. Instead, people inadvertently fail to account for everyone's contributions because they are naturally egocentric. It is harder to consider everyone's contributions when groups are larger.

In the first of four experiments, the study participants–699 MBA students enrolled in a negotiations course–answered six questions to measure how much work they claimed.

For example, they were asked, "Of the total work that your study group did last semester, what percent of the work do you feel like you personally contributed?" based on categories such as preparing case write-ups; providing insights; proposing teamwork suggestions, raising key questions; and providing answers to other group member's questions. The study offered no reward for over-claiming one's contribution.

The math didn't add up. The percentages consistently added up to more than 100 percent, indicating over-claiming. Teams with eight or more members claimed credit totaling more than 140 percent!

The researchers also conducted experiments with academic authors, museum visitors, and a large-sale national sample–producing similar results supporting over-claiming.

"People were surprised about the extent that over-claiming occurs. They think their reporting is accurate," says Juliana Schroeder, an assistant professor of management at UC Berkeley's Haas School of Business.

"Many Hands Make Overlooked Work: Overclaiming of Responsibility Increases with Group Size" paper is co-authored by Schroeder along with Eugene Caruso and Nicholas Epley, both of the University of Chicago's Booth School of Business.

Schroeder suggests ways to reduce over-claiming. "When you have large groups, you might want to consider breaking down the group into smaller teams," says Schroeder.

"It is also important to make the workflow very clear. If assignments are clearly divided, it's easier for people to remember who is doing what."


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