Q: We got cable television a month ago and my two teenage daughters seem addicted to MTV. I see their behavior deteriorating. They have no motivation to do anything else and they seem more tense. Is the extra television watching the cause of this? A: Guest Expert, Anat First, PhD, answers: Unfortunately, I can't give a clear-cut answer to your question. Researchers are divided on this issue. Some claim that television is the most important factor in our media culture; that many of our images and much of what we learn and know comes from our media environment.