What do Martin Luther King, Mikhail Gorbachev, Lee Iacocca, Donald Trump, Leona Helmsley, Ross Perot and Indira Gandhi have in common?

How are Jimmy Carter, Michael Landon, Sylvester Stallone, Bryant Gumbel, Bill Clinton, Christopher Reeve and O.J. Simpson alike?

These leaders all share the same basic “worldviews.” They are either Challengers or Champions according to a personality typing system that is just beginning to make its way into executive suites and business schools. Why? Be...

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