Today's guest blogger is my good friend and professor of psychology at Cal Poly Pomona, Dr. Jeffery Scott Mio. When I was a professor at Washington State University, a colleague of mine used to say ...

Did you know there are many different kinds of humor—and not all of them are good for your relationship? A good sense of humor is a wonderful quality, but the wrong type of humor can do more harm than ...

Research exposes how vulnerable and grandiose narcissists use humor in friendships. Learn to spot when it hurts—and if your ...