"It doesn't matter what industry you're in. People have blind spots about where they're weak," says Scott Erker, a senior vice president at consulting firm Development Dimensions International Inc., which conducted the survey in September. One problem: when workers become managers, they're often surrounded by employees who flatter them as a way of ingratiating themselves to their boss, said Stanford business professor Jeffrey Pfeffer, author of the book Power: Why Some People Have It and Others Don't."
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