Yes that´s right and as far as I know people also do it to make themselves actually feel something even if what they feel then is pain. It´s about control as well. It´s a mixture and there are a lot of things which can cause those kind of disorders. Attention seeking is also a part of it, of course, but have you ever thought about what we all do to get that attention? We do not usually notice but with every step, every breath we take we do things to make other people see, other people care, day by day and we´re always struggling for response and affirmation, compliment and acceptation, it´s always been in man´s nature and it always will be. Just think about it. Even "Tom" here writes this blog, not only for fun but also for getting attention in a way;-)