Say you're sitting around with some friends playing video games and someone mentions a game that happens to be one of your favorites. "Oh，that game's easy. So not worth the time，" one of your friends says. The others agree. Although you enjoy the game quite a lot，you go along with the crowd.
You have just experienced what is commonly referred to as peer pressure（同伴压力），also called peer influence. You will adopt a certain type of behavior，dress，or attitude in order to be accepted as part of a group of your "peers". As a teen
We are all influenced by our peers at any age. For teens，as school and other activities take you away from home，you may spend more time with your friends than with your family. As you become more independent
According to Dr. Casey from Cornell University，teens are very quick and accurate（准确的） in making decisions on their own and in situations where they have time to think. However，their decisions are often influenced by factors like peers. In a recent study，teen volunteers played a video driving game，compared with when they played alone. This shows that teens may find it more difficult to control risky behavior when their friends are around，or in situations where they are extremely angry.
Just as people can influence us to make unwise choices，they can also influence us to make good ones. A teen might join in a volunteer project because his or her friends are doing it，or get good grades because his or her friends think getting good grades is important. In fact，or try out for sports.
While we are always influenced by those around us，the decision to act or not is up to us. So when it comes to decision making，the choice is up to you.
