Talking about the good and bad things that happen can lead to happiness — even if it is from opposite ends of the phone line. In a controlled lab experiment, psychologist Rich Walker of Winston-Salem State University found that the reasons are two-fold: people tend to emphasize positive emotions and mitigate negative ones when telling a story, since memory's natural bias is to keep tabs on the good stuff and gradually lose the emotional intensity of a bad event; and the process of storytelling can affect how one feels about what happened even up to a week later. In other words, talking about a negative experience made the emotional intensity of that memory fade faster than if the event had not been recounted. Walker says that storytelling works best when there is a lot of audience diversity — it helps to tell the story many times to a variety of people.