The coach who taught Sheryl Sandberg to communicate better says there's a surefire way to turn people off in a conversation

Justin Sullivan/Getty On the spectrum of conversationalists, there are two painfully awkward extremes. There's the person who's so passive and reticent that trying to make small talk with them is exhausting. And there's the person who's so domineering and self-absorbed that you could vanish into thin air while they were talking and they'd hardly notice. A chapter in "Pitch Perfect: How to Say it Right the First Time, Every Time," by Bill McGowan and Alisa Bowman, addresses that second awkward ex...