Last month, 50 former national security officials who had served at high levels in Republican administrations from Richard Nixon to George W. Bush published a letter saying they would not vote for their party’s presidential nominee, Donald Trump. In their words, “a President must be disciplined, control emotions, and act only after reflection and careful deliberation.” Simply put, “Trump lacks the temperament to be president.”
In the terminology of modern leadership theory, Trump is deficient in emotional intelligence, the self-mastery, discipline, and empathic capacity that allows leaders to channel their personal passions and attract others. Contrary to the view that feelings interfere with thinking, emotional intelligence, which includes two major components, mastery of the self and outreach to others, suggests that the ability to understand and regulate emotions can make overall thinking more effective.
While the concept is modern, the idea is not new. Practical people have long understood its importance in leadership. In the 1930s, former Supreme Court Justice Oliver Wendell Holmes, a crusty old veteran of the American Civil War, was taken to meet Franklin D. Roosevelt, a fellow Harvard graduate but one who had not been a distinguished student. Asked later about his impressions of the new president, Holmes famously quipped: “second-class intellect; first-class temperament.” Most historians would agree that Roosevelt’s success as a leader rested more on his emotional than his analytical IQ.
Psychologists have tried to measure intelligence for more than a century. Some experts argue that emotional intelligence is twice as important as technical or cognitive skills. Others suggest it plays a more modest role. Moreover, psychologists differ about how the two dimensions of emotional intelligence, self-control and empathy, relate to each other. Bill Clinton, for example, scored low on the first but high on the second. Nonetheless, they agree that emotional intelligence is an important component of leadership. Richard Nixon probably had a higher IQ than Roosevelt, but much lower emotional intelligence.
Leaders use emotional intelligence to manage their “charisma” or personal magnetism across changing contexts. We all present ourselves to others in a variety of ways in order to manage the impressions we make: for example, we “dress for success.” Politicians, too, “dress” differently for different audiences.
Ronald Reagan’s staff was famous for its effectiveness in managing impressions. Even a tough general like George Patton used to practice his scowl in front of a mirror. Trump has a reputation as a bully in interactions with peers, but that is not bad per se. As the Stanford psychologist Roderick Kramer has pointed out, President Lyndon Johnson was a bully, and many Silicon Valley entrepreneurs have a bullying style. But Kramer calls such figures bullies with a vision that inspires others to want to follow them.
It is this deficiency in his emotional intelligence that has cost Trump the support of some of the most distinguished foreign policy experts in his party and in the country. In their words, “he is unable or unwilling to separate truth from falsehood. He does not encourage conflicting views. He lacks self-control and acts impetuously. He cannot tolerate criticism.” Or, as Holmes might say, Trump has been disqualified by his second-class temperament.
Joseph S. Nye, Jr. teaches at Harvard and is the author of “Is the American Century Over?” ©Project Syndicate