How do you act when you are alone versus when you are with your friends, parents, and co-workers? When you are alone, are you quiet, take naps, play video games, or just talk on the phone? When you are with your parents, are you more reserved as in watching what you say when telling jokes or acting innocent? Are you more carefree with friends: laughing out loud, telling jokes, saying obscene language, etc. With co-workers are you more professional? You may tell jokes, laugh and talk among them, but you behave similarly as if you are in the presence of your family. This is called Social Psychology. We are influenced by others in how we behave and think. Watch the video below to learn more about social influence.