A recent feature article in The Washington Post explains having three or more female board members has been linked to more innovation and limits the chances that women's views will be sidelined.
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In the piece, Ivey's Alison Konrad suggests it's important to have a "critical mass" of women on boards in order to affect culture change.
"What we found in the interviews is that when one woman on the board — especially the first woman on the board — is added, it was hard to be heard, hard for her to have a voice,” says Konrad, who has interviewed more than 50 experienced female directors and chief executives in her research. Even some male CEOs picked up on it. “They said it was like she was trying to beat through a brick wall.”