Today's teens have been greatly affected by technology, especially for those kids who have never known anything else and have no desire to.
In the classroom, we see a desire to look up everything on the Internet. Unfortunately, some information is untrue (in terms of research) or incorrect. Students do not know how to research information from books. The Internet is a great tool, but a great deal of information is not yet available outside of books.
When typing, students (and adults...I'm one) often rely too heavily on computers for grammar and spell-check. I usually have to proof things the old fashioned way (with my eyes) as well as on the computer with two different programs. Some words are not caught as misspellings. Others are rejected, but are accurate: e.g., impactful.
It is easier for teens to say things via texting and Facebook. When we get angry or hurt, we often lash out without thinking. When it is verbal only, the pain of our words (or others' can disappear). Anything written down, on paper or on-line (which is so accessible) is there forever. Even deleting does not always work. It is much too easy to bully or slander others. I have heard it said by adults and teens: some people don't have a filter—they write without thinking; they speak without thinking. And words can do unimaginable harm.
Technology can make teens lazy. It's easy to understand that a dictionary is a drag to use, or math is a pain to figure out by hand, but if a computer dies ("crashes and burns"), sometimes the old way is the only resource available.
Technology has made things much easier for everyone. I'm afraid, however, that when things become too easily, some young people don't understand the concept of hard work. This interferes with their ability to integrate into a demanding society at the college level or in the work force. It robs young people of the sense of accomplishment and increased or reaffirmed self-worth when things come too easily. And the sense of "instant gratification" is magnified—some things come with time; the inability to see this can make life much harder.
(Teens are not the only ones who deal with these issues, but as the world becomes more competitive, teens need to be challenged and prepared to compete in a world-wide job market.) ...As I see it.