Peer pressure is the influence used by a social group to change the behavior, attitude, or values of an individual to conform to the group.  The term peers refers to a group of individuals of approximately the same age with similar experiences, interests, and backgrounds.  In other words, your friends.  The pressure applied can be spoken or unspoken and have a positive or negative influence. Spoken peer pressure can be in the form of put-downs, rejections, and reasoning, whereas, unspoken peer pressure is something you feel without anyone saying anything to you.  Peer pressure works because we all want to be accepted by our social group.  It can influence how you dress, what kind of music you listen to, and what types of behavior you engage in.

For more information on peer pressure, please check out this website. 

http://kidshealth.org/kid/feeling/friend/peer_pressure.html