hard to do that our first approach was to bring people in the laboratory situations such as this laboratory here show them comedy material get them to laugh and then analyze the laughter that was produced. because analyzing the laughter not only describes what that sound was but describes the behavior that produced it i'm. bettin you in love to isn't all that easy to achieve in the laboratory. present and realize that during his initial experiments so he decided to switch to news. now he's carrying out research in the university cafeteria a good place to find genuine enough to. and there are plenty of subjects here for his research private i'm just has to sit back and observe.