Reason #2 Changes in the brain’s sensitivity to certain kinds of informationSo what specifically about this time makes it stand out from the rest of our years. One reason is undoubtedly because of changes in the brain's sensitivity to certain kinds of information. Teen years are loaded with (装载着) important social feedback about one's skills, attractiveness, and status. This information is exactly what we need to pay attention to In order to become socially successful.Looking at prehistory may also explain why so much meaning is attached to teenage years. One example we can look at is why teenagers often strive to be popular. As far as scientists can tell. Our prehistoric ancestors (史前祖先) lived in relatively small groups. People generally would live their entire life in this group.