Have you ever noticed all the different changes of this generation? And parents wondered what would happen to this generation. As if there was a huge gap with our generation and their generation. It is very clear that many things have changed today. Everywhere you see there is a change from material things like the cell phone and iPod or the newest fashion. due to technological advancements many things have changed and these changes are positive, however there are things that have gone exaggerated and it is getting out of hand as today's teenagers experience many negative changes in terms of behavior, values ​​and preferences compared to the older generation. According to the Wordbook dictionary “the word change derives from the Old French changier, from the late Latin change, from the Latin change “to exchange barter”, of Celtic origin from the Proto-Indo-European base kamb, “to fold”. But the modern definition indicates an event that occurs when something passes from one state or phase to another. my definition of change means to change old things into something new or something different from the usual or to do something different that is not done until now or to become different in some particular way, permanently losing one's previous characteristics or essence, for example of my definition of change: teenagers used to be polite, while today's teenagers have become spoiled and undisciplined. One of the negative changes in today's teenagers is behavior change. An example of adolescent behavior changes, today's teenagers are more lenient in studies than the previous generation. And two reasons to show why today's teenagers are more indulgent in studies, the first reason why today's teenagers are more l...... middle of paper....... And it's not too late to change that we could correct or modify negative changes in behavior, values ​​and preferences now, before things get worse. As these young people are the next future leaders of the world. References: (2013, May 1) from San Diego State University Retrieved from http://newscenter.sdsu.edu/sdsu_newscenter/news.aspx?s=74179 Retrieved from http: //www.youthfacts.org/crime.php( 2012, March 17) Alave K. more young Filipinos smoking says reportRetrieve from http://newsinfo.inquirer.net/162799/more-young-filipinos-smoking-says-report (1998) Sandoval, G. THE SITUATION OF FILIPINO YOUTH: A NATIONAL SURVEY retrieved from http://www.sws.org.ph/youth.htm/(2010, Feb 22) global ethics institute. “Big changes in the attitudes and values ​​of preteens and adolescents over two decades” Retrieved from http://www.globalethics.org/newsline/2010/02/22/big-changes/