If you're a teenager, you know that the way you behave and feel in different (29) ________ situations changes as you get older. So, you might be interested in a new study about how teenagers' personalities develop. From about thirteen years old, it becomes more important to act in a way that means other people will like you. Also, we start to become keen (30) _________ and more serious about our work and study. We become good at (31) _________ rules and we want to complete tasks that we started much more than we did when we were younger. The big question in the study was whether our friends affect our behaviour towards others. The results show we choose to hang out with people who are like us, (32) __________ that does not mean we change because of them. In fact, we stay the same - we just choose friends who are similar to us!

If you're a teenager, you know that the way you behave and feel in different (29) ________ situations changes as you get older