Being a teenager can be tough. “Troubled” and “rebellious(叛逆的)” are often labels that people give kids in their teens. There are even scientific theories explaining that the likelihood of teenagers taking is due to the fact that their brains aren’t fully developed yet. 【小题1】

But a new study by researches at the University of Pennsylvania and Cornell University may have finally cleared up this misunderstanding. 【小题2】They simply are easily attracted by new things and are eager to explore the world.

The adolescents(青少年) lack experience. 【小题3】This personality trait(特征)is called “sensation seeking”, which is shared by a lot of people and usually peaks during adolescence.

Instead of being something to worry about, sensation seeking is actually necessary, since the process of learning usually goes hand in hand with taking risks. "Teenagers need to build experience so that they can do a better job in making the difficult and risky decisions in later life. ‘Should I take this job? or ‘ 【小题4】’ ”said Valerie Reyna, co–author of the study.

“【小题5】If they don't make a mistake in their teenage years, they will have no life experience when they turn 18 and step out of their parents' protection and into a world that 's unknown to them. Kids need the freedom to test out boundaries while still in a safe environment,” wrote Ann Robinson, editor of The Guardian.