It has become more important than before for leaders in complex, global, knowledge-based companies to understand personality types. Only when a leader becomes aware of personalities and identities can he respect them-and receive respect in turn. Developing that skill has become both more urgent and more difficult as leaders work with personalities developed in different cultures with different attitudes to authority. Michael Maccoby says that leaders need to develop what he calls Personality Intelligence so that they can fit people into the right roles. By developing Personality Intelligence, they will be better able to understand, predict, and improve the behavior of the different types of people they lead.