David Ogilvy was widely regarded as a genius – so much so that he wondered it if were true. After all, he reported, he had flunked out of Oxford. He decided to find out exactly how smart he was, expecting to have an IQ around 145. He scored 96 (Business Strategy Review, 2005).
Gelade (1997) gave a personality test to people in creative jobs (58 individuals in creative departments of prominent UK advertising agencies and small design groups) and compared them with 70 managers in mainstream UK corporations with jobs that were not obviously in need of creativity. The creative people scored much higher on neuroticism, hostility, and depression.
As one researcher noted after reviewing research studies, creative people are not "nice."
See:
Creative Promotional and Free Giveaways by VIP BOOKS
The Joy of Thinking Big
25 Reasons Why Retirement Rocks and Work Doesn't
Retirement for Creative and Innovative People