Who Laughs?

Not mentioned is a pattern of people with no sense of humor who take themselves and everything too seriously. They are often the ones who get weapons and commit mass attacks on others. This kind of person is often found in politics uttering hate speech.

[From article]
“Intelligence is significantly lacking if humor is absent; we would make significantly more mistakes without it,” Hurley argued in an interview. People are right to use a sense of humor as a sign of intelligence."

http://www.thedailybeast.com/blogs-and-stories/2011-03-31/april-fools-day-the-neuroscience-of-humor/

The Neuroscience of Humor
by Sharon Begley
Daily Beast
March 31, 2011